Only when the meeting was over___ go back to meet his friend.
| A．he could | B．he was able to | C．was he able to | D．was able to he |
I congratulated them all their results.
| A．on | B．in | C．about | D．for |
What is the best way you can imagine the overuse of water in our school?
| A．reducing | B．to reduce | C．reduced | D．reduce |
Rather than boring TV shows, he always prefers original novels
| A．watch; read | B．watching; read | C．watch; to read | D．to watch; reading |
Listen! Do you hear someone for help?
| A．calling | B．call | C．to call | D．called |
--- I was wondering if we could go skiing on the weekend.
--- ______ good.
| A．Sound | B．Sounded | C．Sounding | D．Sounds |