13. -- The organizer didn’t make ________ clear who would be the winner of the competition.
-- He did. Whoever __________ to the top of the mountain will win.
| A．this / make that | B．it / makes it | C．that / to make it | D．it / making it |
We must keep in mind the fact __________ China is still a developing country.
| A．whether | B．that |
| C．why | D．when |
My brother _________while he ________his bicycle and hurt himself.
| A．fell; was riding | B．fell; were riding |
| C．had fallen; rode | D．had fallen; was riding |
Larry asked Bill and Peter to go on a picnic with him, but ________ of them wanted to, because they had work to do.
| A．either | B．any |
| C．neither | D．none |
Sarah looked at _________ finished painting with __________satisfaction.
| A．不填；a | B．a; the |
| C．the; 不填 | D．the; a |
—Do you mind my asking you a rather personal question?
— Not at all.________.
| A．Go ahead | B．Sounds a good idea |
| C．That depends | D．That’s fine |