The scientists are beating their brains trying to _______ a solution to the problem.
#67033
A
come about
B
come across
C
come out
D
come up with
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The old couple are living   ,for their only son works abroad after graduation.
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A
on their own
B
of their own
C
separately
D
particularly
II. Choose the correct answers.Few people are able to        of the future but we can imagine it.
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A
make a use
B
make a decision
C
make a promise
D
make prediction
 A kind of glass dish that _____ heat is useful.
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A
resists
B
rejects
C
defends
D
keeps