Look! The children ______ in the river.
#39757
A
swim
B
are swimming
C
is swimming
D
swims
推荐题目
---I came to your office yesterday morning, but nobody was in.--- Sorry, we _______ a meeting .
#36352
A
have had
B
are having
C
were having
D
had
---Hannah loves his new dog, doesn’t he ?--- Yes, he ____ it out for a walk every day.
#36152
A
takes
B
took
C
is taking
D
has taken
The teacher asked the students ________.
#39878
A
what they were doing at that moment
B
what were they doing at that moment
C
how are they doing at that moment
D
what they are doing at that moment
--- Betty, could you answer my question? --- Sorry, Mr. Green. I didn’t hear you. I _______ about something else.
#40124
A
was thinking
B
am thinking
C
think
D
thought
The scientists ________ on the new medicine for two years. They will succeed in no time.
#38384
A
work
B
are working
C
have worked
D
will work