- Night ________ (fall), we hurried home.
- I wonder if he could get it ________ (do) before tomorrow.
- I shall never forget ________ (meet) the late Premier Zhou during his inspection of our factory.
- Matter is the name ________ (give) to everything which has weight and occupies space.
- He refused to tell us whether he ________ (undertake) the job.
- How long ________ they ________ (dig) the ditch?
- he teacher told them since light ________ (travel) faster than sound,lightning ________ (appear) to go before thunder.
- The director recommended that she ________ (study) more English before going abroad.
- “Have you moved into the new flat? ” “Not yet. The rooms ________ (paint). ”
- He fell asleep immediately last night; he must ________ (be) very tired.
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