Câu hỏi: Air pollution, together with littering, are causing many problems in our large, industrial cities today.

A. are

B. industrial

C. problems

D. with

Câu 1: Before becoming successful, Charles Kettering, former vice president of General Motors, was so poor that he has to use the hayloft of a barn as a laboratory.

A. as

B. so poor

C. has to

D. successful

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: _________, 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 4: Nowadays, most people rely ________ the mass media as their main source of information.

A. on

B. in

C. to

D. with

Câu 5: The students got the librarian_________ books for them.

A. buying

B. to buy

C. buy

D. bought

Câu 6: The first color TV _____________ in 1928.

A. produce

B. is produced

C. was produced

D. produced