You had better ________some food and drinks before the field trip ________.
#75967
A
to bring; starts
B
bring; starts
C
bringing; started
D
bring; started
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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