【题目】I'm afraid Tony can't use the new cell phone ____________.

【题目】____________ pollution is heavy now，I don't think it's hopeless.

【题目】Last year our class had a Reading Corner. So far，we ____________ more than 200 books.

【题目】My brother promises ____________ the room a mess again.

【题目】A lot of trees _____ around here every year, and we can enjoy fresher air now.

【题目】There are many magazines for us to read. We can choose ____________ to start.

【题目】The ____________ of printing helped to spread the knowledge.

【题目】--- The world has changed rapidly after the ________of the computer and smartphone.

【题目】_________is the quality to be brave when you facing difficulties.

【题目】--- Hi, Bob. What's going on over there?