—Haven’t you been to Beijing before?

—       . I went there last summer.

He could hardly believe his eyes,       he?

I don’t know         . When he         . I will phone you.

The government         the homeless people         nice houses.

Everyone should make a contribution         the environment.

—       will your parents return?

—They will return in a week.

This lesson is         that one.

Work hard,       you will fail the English exam.

—How was your hometown         ?

—Great changes took place.

A. in 1990s         B. in the 1990s     C, in the 1990’s       D. in the 1990s’

—What would you like to eat?

—       , please.