---- There is a lot of smoke coming out of the teaching-building there.---- Really? It _____ be a fire, most probably.
#89477
A
can
B
ought to
C
have to
D
must
推荐题目
I was on the highway when this car went past fol. Lowed by a police car. They ______ at least 150 kilometers an hour.
#90502
A
should have been doing
B
must have been doing
C
could have done
D
would have done
You look so tired tonight. It is high time you_________.
#90004
A
went to bed
B
went to sleep
C
go to bed
D
to sleep
The space suits can be adjusted so that the team can reproduce different levels of gravity as if they________in space.
#86407
A
are
B
has been
C
were
D
had been
— Why! I _____ get you on the phone. — We ______ basketball on the playground when you phoned.
#89278
A
didn't; must be playing
B
couldn't; must be playing
C
couldn't; must have played
D
didn't; must have been playing
—Where is my dictionary?I remember I put it here yesterday.—You___it in the wrong place.
#89081
A
must put
B
should have put
C
might put
D
might have put