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單項選擇題

After he （） the test, the engineer put down the results.

A.has finished
B.finishes
C.had finished
D.would finish

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單項選擇題

Now that the valve is not worth （）, I suggest it （）.

A.to repair；to renew
B.repairing；be renewed
C.repairing；will be renewed
D.to repair；to be renewed

單項選擇題

（） to damage the protective coating on the inner side of the shell.

A.Care to be not taken
B.Care not to be taken
C.Care to be taken not
D.Not care to be taken

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