Doctors say that exercise is important for health,but it__________be  regular  exercise .
#88242
A
can
B
will
C
must
D
may
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It is difficult, so I suggest that you       __ it to an expert.
#87494
A
should leave
B
will leave
C
are leaving
D
may leave
It is demanded that the plan _____ out as soon as possible. 
#87223
A
must be carried
B
is to carry out
C
carried
D
be carried
 We        the manager , but no one        the telephone number .
#87851
A
could have called ; knew
B
could have called ; had known
C
could call ; had known
D
could call ; knew
—Why didn’t Henry come?—He ________ except he didn’t have time.
#86469
A
would have come
B
will come
C
would come
D
will be coming
He suggested that a new library_________ near the key high school.
#87415
A
is built
B
was built
C
be built
D
should build