Where is your house? Is there any ________ in the neighbourhood?

–I find Chinese people are helpful when traveling around China.–You’re right. I like ______ when people are friendly and helpful.

At last they got the letter they____________．

Believe it or not, there are a number of words in the English language which were French in __________.

It is reported that in our country cities ________ heavy air pollution that is 30 percent above the national standard or higher should try to meet standards by 2030.