–Look! Someone is cutting a tree on the moon.–It _______ be true, Granny. Our teacher says there is no air there.
#75239
A
can't
B
mustn't
C
may
D
should
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—I didn’t tell him the news.—Oh, you ought _______.
#63528
A
to   
B
not to
C
not to have  
D
to have
 Few weight-loss pills can help to keep people slim, _______?
#74637
A
do they
B
dodt they
C
can't they
D
can they