Why do Southern villagers need to build their houses on stilt?

I can’t understand him because he speaks so quickly.

If he didn’t………………………………………………….

The Tay is _________ second largest ethnic group in Vietnam.

Read the following passage and answer the questions.

With the habit of working in teams and being helpful to one other, villagers usually earn their living from farming, raising livestock and making handicrafts. They live in a small community with a temple or a communal cultural house where great events, such as festivals worshipping the village god and traditional games are organized. Villagers in the Southern usually live in houses lined up along central road and built on stilts to keep above flood waters. Along the coastal lines, fishermen depend on the sea as a means of livelihood. In the Central of Vietnam, a place suffering lots of natural disasters all the year round, citizens tend to be more studious and hard-working than those in regions with favourable conditions. People in the central highlands and the northern mountains live by growing rice, rubber trees coffee and tea as well as hunting.

(Source: Adapted from Vietnam Travel Center)

Which can be the topic of the passage?

In some rural areas, it’s difficult to find _______ in a house.

Many Vietnamese ethnic minority students are studying at _______ schools.

Today, Ly came to class _________ than she did yesterday.

How long have you been an ethnologist?

When …………………………………………….