VI.

a. Another problem is the increase of the number of cars on the road.

b. There are many transport rules but many people don't seem really interested in following them.

c. The traffic is worst during rush hours when everyone try to get to work and get home quickly.

d. Some people ride their motorbikes on the pavements rather than waiting in the traffic jam.

e. The traffic can be a nightmare for visitors to Viet Nam for the first time.

V/

a.didn't use to

b.didn't use to

c.didn't use to

d.used to

e.used to

VI/

a. Another problem is the increase of the number of cars on the road.

b. There are many transport rules but many people don't seem really interested in following them.

c. The traffic is worst during rush hours when everyone try to get to work and get home quickly.

d. Some people ride their motorbikes on the pavements rather than waiting in the traffic jam.

e. The traffic can be a nightmare for visitors to Viet Nam for the first time.

Chúc bạn học tốt ^_^!!!
(Nếu thấy hay hãy vote 5*,cảm ơn và bình chọn là câu trả lời hay nhất để mik có động lực giải tiếp các BT khác nhé!)