Câu hỏi: They/ not answer/ phone/ this morning/ so/ must/ out/.

A. They hasn’t answered the phone this morning so they must have been out.

B. They didn’t answer the phone this morning so they must be out.

C. They didn’t answer the phone this morning so they must have gone out.

D. They hasn’t answered the phone this morning so they must go out.

Câu 1: We cut down many forests. The Earth becomes hot.

A. The more forests we cut down, the hotter the Earth becomes.

B. The more we cut down forests, the hotter the Earth becomes.

C. The more forests we cut down, the Earth becomes hotter.

D. The more we cut down forests, the Earth becomes hotter.

Câu 2: "I have never been to Russia. I think I shall go there next year.” said Bill.

A. Bill said that he had never been to Russia and he thought he would go there the next year.

B. Bill said that he would have never been to Russia and he thinks he would go there the next year.

C. Bill said that he had never been to Russia and he thinks he will go there the next year.

D. Bill said that he has never been to Russia and he thinks he would go there the next year.

Câu 3: The substance is very toxic. Protective clothing must be worn at all times.

A. Since the substance is very toxic, so protective clothing must be worn at all times.

B. So toxic is the substance that protective clothing must be worn at all times.

C. The substance is such toxic that protective clothing must be worn at all times.

D. The substance is too toxic to wear protective clothing at all times.

Câu 4: Why don’t you take extra classes in English if you want to become a tourist guide?” said my friend.

A. My friend advised me to take extra classes in English only if I wanted to become a tourist guide.

B. My friend suggested I take extra classes in English if I wanted to become a tourist guide.

C. In my friend’s opinion, I will never become a tourist guide if I don’t take extra classes in English.

D. In my friend’s opinion, taking extra classes in English is necessary if I wanted to become a tourist guide.

Câu 5: People say that at least ten applicants have been selected for the job interview.

A. It is said that well over ten people are interested in having an interview for the job.

B. It is said that no fewer than ten people are going to be interviewed for the job.

C. People say that fewer than ten job interviews have been held so far.

D. I have heard that only ten people have been chosen to have the job interviewed.

Câu 6: Darwin/ who/ be/ famous/ English/ scientist/ develop/ theory/ evolution/.

A. Darwin who is a famous English scientist developed a theory of evolution.

B. Darwin who was the famous English scientist develops the theory for evolution.

C. Darwin, who is a famous English scientist, has developed a theory on evolution.

D. Darwin, who was a famous English scientist, developed the theory of evolution.