—I can't remember those grammar rules!
—_________. Practice more.
| A．You're not alone | B．It's hard to say |
| C．I'm afraid not | D．It's up to you |
Finally he reached a lonely island_ _ was completely cut off from the outside world.
| A．when | B．where | C．whom | D．which |
My father ____ for Beijing on business tonight.
| A．is about to leave | B．has been leaving |
| C．is leaving | D．would leave |
The hero said he didn’t think twice ____ diving into the freezing river to rescue that child.
| A．before | B．after | C．until | D．when |
—Have you some new ideas?
—Yeah. I’ll tell you later.
| A．come about | B．come up |
| C．come out with | D．come up with |
20% of the students of Nan Shan Senior High the school colorful clubs so far.
| A．has joined | B．has been joined |
| C．have joined | D．have been joined |