-Why are you looking so worried? Is there anything I can do for you?-The computer        break down when I nearly finished my composition.
#62970
A
can
B
should
C
must
D
dare
推荐题目
The doctor said he _______ an operation yet.
#75873
A
need
B
needn’t
C
needed not
D
didn’t need
—   willyoufinishdoingthework?—In a fewweeks.
#76327
A
Howlong
B
How far
C
How soon
D
How often
—Must I come back before supper, mum?—No, you        .
#76497
A
can’t
B
mustn’t
C
don’t
D
needn’t