While building a tunnel through the mountain, _______.
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A
an underground lake was discovered
B
there was an underground lake discovered
C
a lake was discovered underground
D
the workers discovered an underground lake
推荐题目
Not only I but also Jane and Kate ___ tired of reading one book after another.
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A
is
B
are
C
am
D
be
We all feel it is Jack that _________ for their son’s bad performance at school.
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A
are to blame
B
is to be blamed
C
are to be blamed
D
is to blame
Every means , but none proved .
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A
have tried; a success
B
have been tried; successful
C
has tried; to be successful
D
has been tried; successful
The number of foreign students attending Chinese universities ________ rising steadily since1990.
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A
is
B
are
C
has been
D
have been