Câu hỏi: Nylon ______________ in the 1930s

A. invented

B. was invented

C. is invented

D. has been invented

Câu 1: Which activities do you think would be difficult ________ blind and deaf people?

A. to

B. for

C. with

D. of

Câu 2: I prefer ___________ abroad to travelling within the country.

A. going

B. to go

C. go

D. went

Câu 3: Braille _________ a system of raised dots that can be read with the fingers by people who are blind.

A. am

B. be

C. is

D. are

Câu 4: The books ___________ have been read by the students should be put on the shelf.

A. who

B. whose

C. that

D. what

Câu 5: She had worked as a tourist guide before __________ a teaching career.

A. starting

B. start

C. to start

D. started

Câu 6: Digital cameras is a wonderful ___________.

A. invent

B. invention

C. invented

D. inventing