Mike didn’t understand ______ made his wife so upset this morning.
A、what
B、why
C、how
D、which
第4题
A、I didn't find him
B、I didn't look for him
C、I didn't found him
D、I wasn't looking for him
第5题
第7题
A、didn' t I
B、didn' t you
C、hadn' t you
第10题
A、If I didn' t take
B、Had I not taken
C、If I haven' t taken
D、Provided I didn' t take
第11题
A、which
B、why
C、how