问题
选择题
| The stones are so heavy. How ______ they ______ to the top of the building without modern machines? |
A. do; lift B. did; lift C. were; lifted |
答案
答案：C
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| The stones are so heavy. How ______ they ______ to the top of the building without modern machines? |
A. do; lift B. did; lift C. were; lifted |
答案：C