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
E-mail, as well as telephones, _____ an important part in daily communication.
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A
is playing
B
have played
C
are playing
D
played
Many a student ________ failed in the biology exam，and Tom is the only one of them who ________ decided to give up the course.
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A
have；has
B
have；have
C
has；have
D
has；has
— How much is this type of cars?— It’s not dear. 11,000 dollars enough．
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A
are
B
were
C
was
D
is
In our school library there ____ a number of books on science and the number of them ____ growing larger and larger.
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A
is; are
B
are; is
C
is; is
D
are; are