--Listen! Someone is knocking at the door.-- ______ be Mary. She has just been to Beijing
#89781
A
She mustn’t
B
It can’t
C
It must
D
She may
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It is recommended by the representatives that traditional cultures _____
#86825
A
should preserve
B
have been preserved
C
be preserved
D
must be preserved
We all suggest that she _____ at the weekend, because her pale face suggests that she _____ in bad condition.
#88007
A
does not work; is
B
cannot work; was
C
not worked; was
D
not work; is
 Since the road is wet this morning, _____ last night.
#90138
A
it must rain
B
it must be raining
C
it must have rained
D
it must have been rain