Mark the letter A, B, C or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

My sister has so many homework to do that she has no time to go out.

Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions.

It's good _______ a glass of warm water immediately after you wake up in the morning.

Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions.

His mother is very proud of him, _______ she?

Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions.

Peter_______ have lunch in the school canteen when he was in grade 6.

Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions.

Traffic _______ in Vietnam usually occur in such big cities as Hanoi and Ho Chi Minh City.

Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions.

Tuan is a good student. He always answers the teacher's questions very _______.

Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions.

The first Earth Day was held _______ April 22, 1970.

Mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions.

We _______ each other at my aunt's house three years ago and _______ friends ever since.