Đề bài; Hoàn chỉnh các câu sau1. If the air / in / city / be / polluted / , / it / can / cause / people's / respiratory / problems2. If / smog / be / frequently / formed / in / city / , / it / cause / difficulty / in / breathing / headache / even / lung caner3. If / carbon monoxide / concentrate / in / great/ amounts / , / it / be / harmful4. the climate / change / if / more trees / be / cut / down / for / hardwood5. If / we / not / control / pollution / soonn / , / it / be / too /...
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Đề bài; Hoàn chỉnh các câu sau
1. If the air / in / city / be / polluted / , / it / can / cause / people's / respiratory / problems
2. If / smog / be / frequently / formed / in / city / , / it / cause / difficulty / in / breathing / headache / even / lung caner
3. If / carbon monoxide / concentrate / in / great/ amounts / , / it / be / harmful
4. the climate / change / if / more trees / be / cut / down / for / hardwood
5. If / we / not / control / pollution / soonn / , / it / be / too / late
6. If / we / not / protect/ frontier / , / we / suffer / many / from / natural / disasters
1, If the air in city is polluted, it can cause peole's respiratory problems.
2,,If smog is frequently formed in the city, it will cause dificulty in breathing, headache and even lung cancer
3, If carbon monoxide concentrates in great amounts , it will be harmful.
4, The climate will change if more trees are cut down for hardwood.
5, If we do not control the pollution soon , it will be too late.
6, If we do not protect the frontier, we will suffer from many natural disasters.
Đề bài; Hoàn chỉnh các câu sau
1. If the air / in / city / be / polluted / , / it / can / cause / people's / respiratory / problems
=> If the air in city were polluted, it could cause peole's respiratory problems
2. If / smog / be / frequently / formed / in / city / , / it / cause / difficulty / in / breathing / headache / even / lung caner
=> If smog were frequently formed in the city, it would cause difficulty in breathing, headache and even lung cancer
3. If / carbon monoxide / concentrate / in / great/ amounts / , / it / be / harmful
=> If carbon monoxide concentrated in great amounts, it would be harmful.
4. the climate / change / if / more trees / be / cut / down / for / hardwood
=> The climate would change if more trees were cut down for hardwood
5. If / we / not / control / pollution / soonn / , / it / be / too / late
=> If we don't control pollution soon, it will be too late
6. If / we / not / protect/ frontier / , / we / suffer / many / from / natural / disasters
=> If we don't protect the frontier forests, we will suffer from many natural disasters