| 1. 单选题 | |
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Twenty years ago, people in this town lacked both the motivation to fight pollution and the knowledge of what exactly needed ________.
A . to clean
B . have cleaned
C . clean
D . cleaning
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| 2. 单选题 | |
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Occasionally I still pick up the cellphone wanting to call my father and tell him something that has just happened to me only at that moment _______ he is gone.
A . remembering
B . to remember
C . remembered
D . having remembered
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| 3. 单选题 | |
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— How fortunate Mr. Liu was _______ to Canada once again for further study!
—Have you heard from him lately?
A . sent
B . to be sent
C . having been sent
D . to have been sent
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| 4. 单选题 | |
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Vlog, short for video blog, once _______ in our life, has suddenly caught on recently.
A . ignoring
B . being ignored
C . ignored
D . having ignored
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| 5. 单选题 | |
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_______ as a member of Costco, Steve is entitled to purchase cost-effective goods in the store.
A . To register
B . Registering
C . Having registered
D . Registered
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| 6. 单选题 | |
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______ the identity of 39 bodies found in a lorry container, the British government announced that the deaths were from Vietnam.
A . Confirmed
B . Having confirmed
C . To confirm
D . Confirming
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| 7. 单选题 | |
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I'm impressed by the smart speakers with a voice control system, _______ all the devices to a computer.
A . connecting
B . connected
C . to connect
D . having connected
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| 8. 单选题 | |
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There are some factors dominating your success. _______ a good chance sometimes, in my opinion, outweighs one's ability.
A . Seizing
B . Having seized
C . Seized
D . Having been seized
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| 9. 单选题 | |
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A celebrity is a person who works hard all his life to become known, then wears dark glasses _______.
A . to avoid being recognized
B . to avoid recognizing
C . to avoid to recognize
D . avoid being recognized
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| 10. 单选题 | |
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_______ the latest development of science and technology, he has had many modern communication devices installed in his office.
A . To inform of
B . Being informed of
C . To be informed of
D . Having informed of
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