Class regulations require _____ is the last to leave the classroom _____ off all the lights.
#90190
A
who; should turn
B
whom; shall turn
C
whomever; turns
D
whoever; turn
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I supported him in time , otherwise he         off the bike .
#88986
A
might fall
B
would fall
C
should have fallen
D
would have fallen
--Is Jack still in hospital? --Yes. He _________ the bad food. 
#86502
A
wouldn’t eat
B
shouldn’t eat
C
wouldn’t have eaten
D
shouldn’t have eaten