Doctors say that exercise is important for health, but it _______ be regular exercise. 
#87072
A
can
B
will
C
must
D
may
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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
David did not regret saying what he did but felt that he     it differently.
#87310
A
could express
B
would express
C
could have expressed
D
must have expressed
 The manager considers it is important that everything _______ by weekend.
#86435
A
will complete;
B
has completed
C
be completed
D
is completed