It is vital that every piece of equipment ________ before the experiment.
#87434
A
is checked
B
will be checked
C
be checked
D
must be checked
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How I wish I _________ him the secret! I regret having done that now. 
#87001
A
hadn’t told
B
had told
C
would tell
D
didn’t tell
 If you _______ the medicine, you _______ better now. 
#89470
A
took; would feel
B
had taken; felt
C
had taken; would feel
D
took; would have felt
Often, when he ______ something that ______ him, he wasted his time drawing some little pictures. 
#89280
A
should be doing; gave
B
should have been doing; was given
C
should do; was given
D
should have been doing; had given
---- Please tell Tom about the meeting tomorrow. ---- We ______him yesterday.It is a little late ,in my opinion.
#87317
A
ought to tell
B
would have told
C
should have told
D
must have told
 We      the postcards yesterday, but it didn’t arrive.
#87363
A
should receive
B
ought to receive
C
ought to have received
D
must have received