The urge to go abroad for further study is strong, but it was not until last summer ________ I knew how powerful it could be.
| A．who | B．that |
| C．where | D．before |
______ a piece of ice outside in such hot weather, and you’ll soon find it melt.
| A．To put | B．Put | C．Putting | D．Having put |
______ it is to listen to music when you are free.
| A．What fun | B．What a fun | C．How fun | D．How funny |
—What are you going to do this weekend?
—_______. If time permits, I may go to Shanghai with my friends.
| A．Don’t mention it | B．It doesn’t matter | C．It depends | D．Forget it |
I hope there are enough glasses for each guest to have ______.
| A．it | B．those | C．them | D．one |
Professor Smith, along with his assistants, _____ on the project day and night to meet the deadline.
| A．work | B．working | C．is working | D．are working |