As is natural, a man as old as he ______ be very forgetful.
#90082
A
can
B
must
C
should
D
would
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I____ asleep because it took me a long time to realize that the telephone was ringing.
#88031
A
could have fallen
B
should have fallen
C
must have fallen
D
mustn’t have fallen
——Do you think it necessary that he ________ to Miami but to New York? ——I agree, but the problem is ________ he has refused to. 
#90455
A
will not be sent; that
B
not be sent; that
C
should not be sent;what
D
should not send; what
 Recently quite a lot of experts _____ that another law on wildlife protection ____ as soon as possible. 
#89276
A
suggested; must be passed
B
have suggested; be passed
C
were suggesting; was passed
D
suggested; being passed
 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