`26` In big cities, such as Ha Noi and Ho Chi Minh City.

`-` Dẫn chứng: "Traffic jams in Viet Nam frequently take place in big cities, such as Ha Noi and Ho Chi Minh City."

`27` It is the worst during the rush hour.

`-` Dẫn chứng: "But It is worst during the rush hour when everyone is in a hurry to get to work or come back home."

`28` Taxis are difficult to catch during the downpour.

`-` Dẫn chứng: "Taxis are extremely hard to catch or wave during the downpour.''

`29` Yes, it does.

`-` Dẫn chứng: "When it rains, the traffic jam gets more terrible."

`30` Most of them ride their motorbikes on the pavement.

`-` Dẫn chứng: "Most road users ride their motorbikes on the pavement rather than waiting calmly."