viết lại câu
1, Because it’s raining now, we can’t go to work.
↔ Because of rain, we can't go to work.
2, Although it was very noisy, we continued to study our lessons.
↔ In spite of  the noise, we continued to study our lessons.
3, If it doesn’t rain, we can go picnic.
↔ Unless it rains, we can go picnic.
4, I haven’t met Lucy since we left school.
↔ The last time I met Lucy was when we left school.
5, She began to learn English 4 years ago.
↔ She has learned English for 4 years.

1.Because it's raining now, we can't go to work.
=>Because of the rain, we can't go to work.

2.Although it was very noisy, we continued to study our lessons.
=>In spite of the noise, we continued to study our lessons.

3.If it doesn't rain, we can go picnic.
=>Unless it rains, we can go picnic.

4.I haven't met Lucy since we left school.
=>The last time I met Lucy was when we left school.

5.She began to learn English 4 years ago.
=>She has learned/ has been learning English for 4 years.

Chúc bạn học tốt!