1. A lot of rivers and lakes in this area (contaminate) every year. => ____________________ 2. We’ll save thousands of trees if we (not waste) paper. => ____________________ 3. Most people (leave) before the storm struck the city. => ____________________ 4. If there was no fresh water in the world, what (happen)? => ____________________
2 câu trả lời
`1`. are contaminated
- every year + chủ ngữ chỉ vật
- Câu bị động hiện tại đơn: S + is/am/are + Vpp
`2`. don't waste
- If 1: If + S1 + V(s/es), S2 + will/can + Vinf
`3`. had left
- S1 + had + Vpp + before + S2 + V2/ed: hành động xảy ra trước hành động khác trong quá khứ
`4`. would happen
- If 2: If + S1 + V2/ed, S2 + would/could + Vinf
1.are contaminated ( every year: HTĐ )
2.don't waste
3. had left ( before : QKHT )
4. would happened
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