Câu hỏi: 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 1: Three women, none of whom we _______ before, _______ out of the hall.

A. saw-had come

B. had seen-came

C. saw-came

D. had seen-had come

Câu 2: Our children _______to school by bus every morning.

A. take

B. are taken

C. have taken

D. are taking

Câu 3: She used __________ to a special school for deaf-mute students.

A. go

B. to go

C. going

D. went

Câu 4: Nylon ______________ in the 1930s

A. invented

B. was invented

C. is invented

D. has been invented

Câu 5: Every day, he _________ his buffalo to his plot of land.

A. lead

B. leads

C. to lead

D. leading

Câu 6: The weather was fine so we decided to go ____________ foot.

A. on

B. by

C. with

D. in