My uncle _________ drive a car two years ago. Now he drives very well. 
#78292
A
couldn’t
B
can’t
C
mustn’t
D
shouldn’t
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You ________ touch the chemical, or you ________ get burnt.
#63118
A
can’t; will
B
mustn’t; will
C
may not; would
D
shouldn’t; should
We         arrive at six. But I’m sorry we are late. 
#63290
A
should
B
were supposed to
C
must
D
ought to