Câu hỏi:

Find and correct the mistakes

We must act now before it is too late doing anything about the problem.

A. now

B. late

C. doing

D. about

Câu 1:

We try __________ in touch with our neighbor after moving our house.

A. to keep

B. to come

C. to take

D. to have

Câu 2:

Before he did his homework, he __________ a TV show.

A. watches

B. had watched

C. watched

D. is watching

Câu 3:

Find and correct the mistakes

I am interesting in studying life on other planets.

A. interesting

B. studying

C. on

D. planets

Câu 4:

Find and correct the mistakes

Find and correct the mistakes?

A. Can

B. tell me

C. have done

D. yesterday evening

Câu 5:

Playing badminton __________ so interesting that we play it three times a week.

A. are

B. be

C. is

D. has been

Câu 6:

What is the most well-known __________ invention in the 19th century?

A. scientist

B. scientific

C. science

D. scientifically