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trinhdz
2 năm trước
Trong các mệnh đề sau, tìm mệnh đề đúng? A. ∀x ∈ R; x2 < 0 . B. ∀x ∈ N; x : 3 . C. ∀x ∈ R; -x2 < 0 D. ∃x ∈ R; x > x2.
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Exercise 1: write the passive form of the verbs in brackets. 1.The letter…………………………………………to you recently.( send) 2. The shoes……………………just………………………………by him.( polish) 3. …………………………your homework…………………………………..?(finish) 4. The building……………………………………..…………………..yet.( not complete ) 5. ……………………..the dog…………………………………………yet? (feed) Exercise 2: write the following sentences into the passive voice. 1.Tom has already done his exercises. →……………………………………………………………………………………………………… 2. Mary has washed her clothes. →…………………………………………………………………………………………………………………. 3. Someone has stolen my shoes. →……………………………………………………………………………………………………………….. 4. Have they brought him the massage ? →……………………………………………………………………………………………………… 5. No one has informed me about the news. →………………………………………………………………………………………………..

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