We must keep the classroom ___________.
#61530
A
clean
B
to clean
C
cleaning
D
cleaned
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Jack ______ be in the library. He is playing football on the playground.
#54032
A
can’t
B
can
C
need
D
must not学科
______ there’s going to ______ a basketball match tomorrow，______ I won’t go to watch it because I’m very busy.
#55946
A
Though; be; but
B
Though; have; /
C
/; have; but
D
Though; be; /
Everyone, including her parents, _______ the Wolf Hill, and they will be back this afternoon.
#60448
A
has gone to
B
have gone to
C
has been to
D
have been to
China has developed rapidly since 1978.
#63053
A
has a rapid development
B
has made rapid progress
C
has a great change
D
has made a rapid progress