________ an actual occurrence，the film Huo Yuanjia will be popular with many people.
| A．Basing on |
| B．Based on |
| C．To base on |
| D．Base on |
I prefer to buy a new TV rather than ________ it.
| A．repair | B．to repair | C．repairing | D．to repairing |
He doesn't know_________ the work by himself.
| A．whether can he finish | B．whether he could finish |
| C．whether can how finish | D．whether he can finish |
Oh, boy, why are you killing your time this way? Can’t you find something ________ doing?
| A．useful | B．deserve | C．valuable | D．worth |
—Which of the two pens are you going to buy?
—I’ll buy _____of them, so I can give one to my friend.
| A．all | B．neither | C．every one | D．both |
You made the same mistake forthird time, dropping_____“u” in the word “unusual”.
| A．a, the | B．a, a | C．the, an | D．a, an |