We _______the letter yesterday, but it didn”t arrive.
#63105
A
must receive
B
ought to receive
C
must have received
D
ought to have received
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You________ drink it, for it is poisonous.
#63655
A
can’t
B
needn’t
C
may not
D
mustn’t
There was something wrong with the network,or the e-mail____ earlier.
#62904
A
could have been sent
B
might be sent
C
need have been sent
D
must be sent