题目内容
— Did they carry out the experiment in the school lab?
— No, it was in the scientific center _______ their teacher worked.
— No, it was in the scientific center _______ their teacher worked.
[ ]
A. that
B. where
C. why
D. when
B. where
C. why
D. when
B
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How do you guess ________?
| A.did they finish the work within so short a time |
| B.they finished the work within so short a time |
| C.had they finished the work within so short a time |
| D.will they finish the work within so short a time |