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The old man was so tired that he couldn't walk on. (同义句)

The old man was ________ tired ________ walk on.

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The Greens return to England three times a year. (画线提问)

________ ________ do the Greens go back to England?

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He filled the bag with some new books. (同义句)

The bag is ________ ________ some new books.

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It took workers two years to build the bridge. (画线提问)

________ ________ did it take to build the bridge?

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He has enough money for the lab. (改为一般疑问句)

________ he ________ enough money for the lab?

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He has to wait a long time to see the doctor. (画线提问)

What ________ he ________ ________ ________?

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My brother often helps me with my English. (同义句)

My brother often ________ me ________ English.

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Please help me mend my bike. (同义句)

________ you please help me ________ my bike?

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We must finish this work on time? (一般疑问句)

________ ________ finish this work on time?

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Li Lida has to look after his sick mother at home. (一般问句)

________ Li Lida ________ to look after his sick mother at home?