He has      for three or four days. 
#78091
A
got a headache
B
fallen ill
C
caught a cold
D
had a cough
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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