There is ________ useful book on the desk， _________ useful book belongs to my brother．
| A．a; the | B．an; the | C．a; an | D．an; a |
We are looking forward to ____________ the Great Wall.
| A．visit | B．visits |
| C．visiting | D．visited |
I spent all my free time ________ speaking English.
| A．practise | B．practicing |
| C．to practice | D．practises |
My bike is lost. I can’t find _______. So I want to buy a new _________.
| A．it; it | B．it; one |
| C．one; it | D．it; that |
___________ stars were shining in sky at night.
| A．Million | B．Millions |
| C．Million of | D．Millions of |
I will call you _________ I come back from Beijing.
| A．until | B．as soon as |
| C．unless | D．while |