--I'm not finished with my dinner yet.
--But our friends__________for us.
| A．will wait | B．wait | C．have waited | D．are waiting |
Studying in groups is necessary_____ you want to do well in school.
| A．if | B．until | C．unless | D．though |
You can hardly imagine the ______ they went ______.
| A．suffering; through | B．concern; through |
| C．recovery; over | D．worry; over |
---He didn’t go to the concert yesterday, did he?
---_______, he was studying for the tests all day.
| A．No, he didn’t | B．Yes, he did | C．No, he did | D．Yes, he didn’t |
I have been to Shanghai. I______ there last month.
| A．go | B．went | C．has gone | D．will go |
---Hello, can I speak to Robert, please?
---Hold on, please. He_______ in the garage.
| A．has worked | B．is working | C．worked | D．will work |