– We must act now because time is _________.– Yes. Let’s start.
The _____ population has caused many serious problems.
— What did he say just now?— He asked me ________.A. when my sister came backB. when did my sister come backC. When my sister will come back
—Thanks a lot for offering me so much help! — ! A. It’s a pleasure B. With pleasure C. You’re kidding
—Did you get up early to do exercise in the morning, Bruce? —Yes, quite early. I have to it. A. used B. became used C. got used
—How terrible the pollution is here! — Yes. It is harmful ________ both humans and animals. A. for B. to C. with