Circle the correct answers

01 Đề bài:

C. Circle the correct answers.

(Khoanh tròn các câu trả lời đúng)

1. When they improve / improving public transportation, more people will use it.

2. Having built / After built more roads in the city, the government could reduce traffic congestion.

3. There will be less traffic after they open / opening the new subway.

4. Before moving / having moved to the city, you should research your job opportunities.

5. Getting / Having gotten around the city, you should use public transport like buses or trains.

02 Bài giải: