She ________ a bag of sweets on the floor.A.droppedB.fallC.fellD.felt

下列属于射频仪报错的是（）

查询中转旅客托运行李信息的指令是（）

Thelittlegirlhasnoparents,__（）

It is necessary that ________ before10 o’clock.A.she returns homeB.for her to return ho

She works（）Saturdays but they finish at twelve o'clock.

（）she（）any yoghurt

It is necessary that she will return home before10 o’clock.()

It is necessary that she return home before10 o’clock.

Mark felt that it was time for him to take part in his community，so he went to the neighborhood meeting after work.The area's city councilwoman(女议员)was leading a discussion about how the quality of life was decreasing.The neighborhood faced many problems.Mark looked at the charts taped to the walls.There are charts for parking problems，crime，and for problems in vacant buildings.People were supposed to suggest solutions to the councilwoman.It was too much for Mark."The problems are too big，" he thought.He turned to the man next to him and said，"I think this is a waste of my time.Nothing I could do would make a difference here."Mark thought some more on his way to the bus stop."People should just take care of themselves，" he decided."That's enough to do.I can't take on all the problems of the world."As he neared the bus stop，Mark saw a woman carrying a grocery bag and baby.She was trying to unlock her car，but she didn't have a free hand.As Mark got closer，her other child，a little boy，suddenly darted into the street.The woman tried to reach for him，but as she moved，her bag shifted and groceries started to fall out.Mark ran to take the boy's arm and led him back to his mother.Then he picked up the groceries while the woman smiled in relief."Thanks!" she said."You've got great timing!""Just being neighborly，" Mark said.As he rode home，he glanced at the walls of the bus.On one of them was "Small acts of kindness add up." Mark smiled and thought，"Maybe that's a good place to start."
1. It is known from the passage that _____.
A. Mark played an active part in community activities
B. the city councilwoman was responsible for the falling of life quality
C. visual aids were used to display the seriousness of problems
D. many people were discouraged by the many problems facing them
2. In Mark's opinion_____.
A. nobody was so able as to solve the problems
B. he was not in the position to solve such problems
C. many people were too selfish to think about others
D. he already had more than enough work to do
3. The word "darted" in paragraph 5 can be best replaced by _____.
A. "walked"
B. "marched"
C. "wandered"
D. "dashed"
4. What is the implication of the words on the bus wall？_____
A. You should be kind to your neighbors and they will treat you the same way.
B. Everyone can play his own part to make things better.
C. All small acts will add up to kindness.
D. It's a small act to help a person in need.
5. The passage is mainly about _____.
A. how individuals can help make a difference
B. running a neighborhood meeting to solve its problems
C. citizens' reactions to the problems they face
D. solving problems through group action

请帮忙给出正确答案和分析，谢谢！

Which of the following sentences contains subjunctive mood？A．Lucy insisted that her son ge
Which of the following sentences contains subjunctive mood？
A．Lucy insisted that her son get home before 5 o"clock.
B．She used to drive to work, but now she takes the city metro.
C．Walk straight ahead, and don"t turn till the second traffic lights.
D．Paul will cancel his flight if he cannot get his visa by Friday.

请帮忙给出正确答案和分析，谢谢！