Listen! Someone ______ in the next room.
#39897
A
sing
B
singing
C
is singing
D
are singing
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Look, so many people are running out of the station. I wonder what ________.
#36284
A
is happened
B
was happening
C
is happening
D
had happened
--- May I use your dictionary, please?--- Sorry. My dictionary     . I’ve looked for it everywhere but I ______ it yet.
#41964
A
has lost; don’t find
B
is missing; haven’t found
C
has lost; haven’t found
D
is missing; don’t find
---Do you know when Dr Smith_____for dinner this evening?----No,but I think he _____when he is free.
#39715
A
will come;comes
B
will come;will come
C
comes;comes
D
comes;will come