Câu hỏi: You must have forgotten to send the email, ________ there’s nothing in my inbox.

A. because of

B. for

C. due to

D. owning to

Câu 1: Do you know that ________ longest river in ________ world is ________ Nile?

A. the/the/the

B. a/the/the

C. x/the/a

D. the/the/x

Câu 2: We arrived at the airport. We realized our passports were still at home.

A. Not until we arrived at the airport, did we realize that our passports were still at home.

B. We arrived at the airport and realized that our passports are still at home.

C. Not until had we arrived at the airport, we realized our passports were still at home.

D. It was until we arrived at the airport that we realize our passports were still at home.

Câu 3: New sources of energy have been looking for as the number of fossil fuels continues to decrease.

A. New sources

B. been looking

C. fossil

D. continues

Câu 4: ________________________, he left the hall quickly.

A. Not be rewarded with a smile

B. Not rewarding with a smile

C. Not having rewarded with a smile

D. Not being rewarded with a smile

Câu 5: Blacken the letter A, B, C, or D on your answer sheet to indicate the word with the main stress different from that of the other three words in each question.

A. situation

B. examination

C. generation

D. education

Câu 6: ________ at the airport more early, he would have met his friend.

A. Then he arrived

B. Had he arrived

C. When he arrived

D. He has arrived