—What is he doing now?
—He’s ________ the teacher in class now.
| A．listening | B．listen to |
| C．listens to | D．listening to |
—Where are Maria and Kangkang?
—They _____ England.
| A．have been to | B．are away | C．have gone to | D．had been in |
—Have you found your lost book_____?
—No, I haven’t.
| A．already | B．yet | C．still | D．once |
The _____ population has caused many serious problems.
| A．increase | B．increased | C．increasing | D．increases |
— What did he say just now?
— He asked me ________.
A. when my sister came back
B. when did my sister come back
C. 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