Explorer Robert Ballard searched the sunken ship---the Titanic for more than 20 years and also, with his cameras, he _____ the hole along the side of the ship which had caused it to fill with water and sink.
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A
could find
B
managed finding
C
succeeded to find
D
was able to find
推荐题目
—Have you got any job offer? —No, I______.
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A
am waiting
B
waited
C
had waited
D
have waited
Pardon? I ___ quite catch you.
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A
didn’t
B
couldn’t
C
don’t
D
can’t
 Hurry up! Mark and Carl  us.
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A
expect
B
are expecting
C
have expected
D
will expect