1. Mr. John is the teacher now. He (teach) (16) English since he came here in 1999.
2. If everyone (come) (17) here, wake me up immediately.
3. Please come on time. I hate (be) (18) kept (wait) (19) .
4. (Water, boil) (20) at 1000C?
5. Maya, an ethnic girl, always wants to (become) (21) an English teacher in the near future.

In the United States of America, the national language is (22) English. Four hundred years ago, some English people came to North America to live and they brought (23) language to this country.
Now in the USA, people speak (24) English . Most of the words are the (25) in American and British English, but the Americans say some English words not as people (26) in England. Canada is (27) to the North of the United States of America. It is larger (28) the United States. In Canada, many people (29) English because they also came from England many years (30) . But in some parts of Canada, people speak (31) because they came from France.

For centuries, poets, writers and musicians have mentioned the ao dai in poems, novels and songs. The ao dai is the traditional dress of Vietnamese women. It consists of a long tunic that is slit on the sides and worn over loose pants. Traditionally, it was frequently worn by both men and women. The design and material used for men were different from those used for women. Nowadays, women usually wear it, especially on special occasions. However, many Vietnamese women today often prefer to wear modern clothing at work, because it is convenient.
Now fashion designers want to change the traditional ao dai. Some have printed lines poetry on the ao dai, so they look modern and very fashionable. Other designers have taken inspiration from Vietnam's ethnic minorities. They have visited villages and studied traditional designs and symbols such as suns, stars, crosses, and stripes. They have added these patterns to the ao dai, so Vietnamese women can continue to wear the unique dress, which is now both traditional and fashionable.