làm đúng, giải thích đầy đủ
1. Is the rubbish every day?
A. collect B. collecting C. collected D. be collected
2. In 1876, the telephone first introduced by Bell and Watson.
A. was B. is C. has been D. had been
3. It’s important wildlife in the area.
A. to conserve B. conserving C. conservation D. conserve
4. We were delighted your letter yesterday.
A. to get B. got C. getting D. get
5. Let’s play tennis instead of television.
A. watch B. watching C. watches D. to watch
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