—How much shall I pay for the food?—You          .This is free of charge.
#87632
A
mustn’t
B
needn’t
C
shouldn’t
D
couldn’t
推荐题目
 There was something wrong with the network, or the e­mail ________ earlier.
#86491
A
could have been sent
B
might be sent
C
need have been sent
D
must be sent
When you _____ into the gallery, you feel as if you____ inside a fragile, white seashell.
#87021
A
walking, are
B
walked, were
C
walks, are
D
walk, were
Such a good opportunity may not come again, so you ____________ let it go this time.
#88193
A
hadn’t better
B
wouldn’t better
C
would better not
D
had better not