His lack of professional knowledge _______for the failure of the experiment.
| A．accounted | B．explained | C．counted | D．contributed |
--- Did you find the pen yesterday?
--- No, I didn’t find ________, but I have bought ________.
| A．it; it | B．one; it | C．it; one | D．one; one |
All of us want very much to see these amusing movies，especially you referred to just now．
| A．any | B．it | C．the one | D．one |
______ has already been pointed out, only by correcting mistakes, can you make progress.
| A．It | B．As | C．That | D．What |
I will appreciate ______ if you can give me a hand.
| A．this | B．that | C．it | D．one |
The two girls are getting on very well and share _______ with each other.
A. little B. much C. some D none