Câu hỏi:

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

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

The students __________ for an exam at this time next week.

The city/ built/ on/ area/ of/ thirty square kilometers.

___________________________________________________________

Choose the letter A, B, C or D the word that has the underlined part different from others.

Find and correct the mistakes

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

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