Câu hỏi: We _________ already ________ Huong Pagoda.

A. were…seeing

B. have…seen

C. are…seeing

D. will…see

Câu 1: I was really impressed ………………….the beauty of Dubai.

A. on

B. in

C. to

D. by

Câu 2: It was hot, _________ I turned on the conditioner.

A. however

B. but

C. because

D. so

Câu 3: Human beings are ________ greatest threat to survival of endangered species.

A. Ø

B. an

C. the

D. a

Câu 4: They_________ Ho Chi Minh City last summer.

A. visit

B. will visit

C. have visit

D. visited

Câu 5: The first color TV _____________ in 1928.

A. produce

B. is produced

C. was produced

D. produced

Câu 6: The view is great, _______?

A. isn't it

B. was it

C. doesn't it

D. did it