While __________ for the bus, I happened to come across my childhood friend, Tom.
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A
waited
B
wait
C
waiting
D
to wait
推荐题目
This is the hotel _______last month.
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A
which they stayed
B
at that they stayed
C
where they stayed at
D
where they stayed
The how to book can be of help to______ wants to do the job.
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A
who
B
whomever
C
no matter who
D
whoever
In such hot weather, the new plant will have to be protected from the sun if they ______.
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A
are surviving
B
survives
C
are to survive
D
have survived
The people，______ had been damaged by the flood，were given help by the Red Cross.
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A
all whose homes
B
all their homes
C
all of their homes
D
all of whose homes