Sam enjoys ____stamps. And now he has 226 of them. [ ]A. to collect B .co

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Sam enjoys ____stamps. And now he has 226 of them. [     ]
A. to collect
B .collected
C .collects
D. collecting

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举一反三

He started        a letter to his father two hours ago.     [     ]
A. write
B. wrote
C. writing
D. written

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This room needs _         up.   [     ]
A. standing
B. cleaning
C. getting
D. staying

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用单词的正确形式填空1. Mary is much                 _(outgoing)than Betty.
2. I wish to speak English as _       ( well) as you.
3. My father used to         ( smoke) a lot, but now he doesn"t smoke anymore.
4. David jumped the _       ( high) of all boys.
5. Don"t give up _         ( work) hard. You"ll succeed soon.

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用单词的正确形式填空1. He happened           __  __(help) an old woman on his way home.
2. I have forgotten____(return) his money, so he didn"t receive.
3. I spent about half an hour in____(write) yesterday"s diary.
4. She was very busy, so I let her____(go) back first.
5. At least we can afford        ____(buy) an electric bike.
6. I had something to ask him, but he avoided___    ( answer) my question.

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After a short rest, they went on _____the trees.[     ]
A. to plant
B. planting
C. plants
D. planted

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