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

A. Ø

B. an

C. the

D. a

Câu 1: We _________ already ________ Huong Pagoda.

A. were…seeing

B. have…seen

C. are…seeing

D. will…see

Câu 2: If ________ access to education, children living in poverty will have a brighter future.

A. providing

B. are provided

C. having provided

D. provided

Câu 3: I don't mind ______ you ______ the washing up.

A. helping/ doing

B. help/ do

C. to help/ to do

D. helping/ do

Câu 4: They_________ Ho Chi Minh City last summer.

A. visit

B. will visit

C. have visit

D. visited

Câu 5: _________, we couldn’t make out the gist of the passage.

A. Due to Romeo’s carefully explanations

B. Though carefully explained by Romeo

C. Carefully as Romeo explained

D. As Romeo carefully explained

Câu 6: I and Kenny______ pen pal friends since I_______ Singapore.

A. are/ visit

B. were/ have visited

C. were/ visited

D. have been/ visited