Doctor/ asking/ Huy/ questions/ about/ health problems.

A. We should keep our bodies warm to avoid flu or a cold.

B. We should to keep our bodies warm to avoid flu or a cold.

C. We should keeping our bodies warm to avoid flu or a cold.

D. We should keep our bodies warm to avoiding flu or a cold.

A. Get enough rest helps you concentrate at school.

B. Getting enough rest helps you concentrate on school.

C. Get enough rest helps you concentrate on school.

D. Getting enough rest helps you concentrate at school.

A. I like but coffee, I don’t like tea.

B. But I like coffee, I don’t like tea.

C. I like coffee, but I don’t like tea.

D. I like coffee, I don’t like tea, but.

A. I have a toothache yesterday because I ate many sweets.

B. I had a toothache yesterday because I ate many sweets.

C. I have a toothache yesterday because I eat many sweets.

D. I had a toothache yesterday because I eat many sweets.

A. It am easy to get flu. We should try to keep clean more.

B. It is easy to get flu. We should to try to keep clean more.

C. It is easy to get flu. We should try to keep clean more.

D. It is easy to get the flu. We should try to keep clean more.

A. Getting plenty of rest is really important.

B. Getting plenty rest is really important.

C. Getting plenty of rest are really important.

D. Getting a plenty of rest is really important.