1、【题目】A beam of light will not bend round corners unless ________ (make) to do so with the help of a reflecting device
答案：
made
解析：
暂无解析
1、【题目】________ (fail) several times, they need some encouragement.
答案：
Having failed
解析：
暂无解析
1、【题目】Howlong________they________(dig)theditch?
答案：
解析：
1、【题目】Night________(fall),wehurriedhome.
答案：
解析：
1、【题目】Iwonderifhecouldgetit________(do)beforetomorrow.
答案：
解析：
1、【题目】Heaskedmewhethermybrother________(fly)toBeijing.
答案：
解析：
1、【题目】________(fail)severaltimes,theyneedsomeencouragement.
答案：
解析：
1、【题目】I wonder if he could get it ________ (do) before tomorrow.
答案：
done
解析：
暂无解析
1、【题目】I shall never forget ________ (meet) the late Premier Zhou during his inspection of our factory.
答案：
meeting
解析：
暂无解析
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