There have been several minor conflict between the two countries over the past decade.（)

He would have given you more help， if he ________ so busy.A. have not beenB. had not b
He would have given you more help， if he ________ so busy.
A. have not been
B. had not been
C. not have been
D. not had been

Alice is the only one of the students in our school who（）Australia?

A number of boys ()absent some time during the term.

A．The performances have been rescheduled.B．Student discount tickets are available.C．Pr

A．The performances have been rescheduled.
B．Student discount tickets are available.
C．Prices for all tickets have been reduced.
D．Ushers are needed at the theater.

请帮忙给出正确答案和分析，谢谢！

Many students at the school _______ on a project which relates to the unemployment problem.

Thefire＿＿＿＿tothefifthfloor．＿＿＿＿allthepeople＿＿＿＿（）

—What kind of work have you been doing up to now？— ____________ .A You can call me Charl
—What kind of work have you been doing up to now？
— ____________ .
A You can call me Charles.
B I'll go to Beijing next week.
C I have been an English teacher for two years.

The daisy－like flowers of chamomile have been used foe centuries to__anxiety and insomnia. Adecline Brelieve Cquench Dsuppress

The daisy-like flowers of chamomile have been used foe centuries to__anxiety and insomnia.

Adecline

Brelieve

Cquench

Dsuppress

Throughout their history, Americans have been people on the move.(英译中)

They______informed, or they would get here on time.A．mustn't have beenB．shouldn't have bee
They______informed, or they would get here on time.
A．mustn't have been
B．shouldn't have been
C．can't have been
D．needn't have been

请帮忙给出正确答案和分析，谢谢！