---I’ve told her many times, and she still forgot about it!
---I understand. It’s true that she___ be very forgetful sometimes.
| A．can | B．should | C．ought to | D．must |
——How long will you stay in Peking University?
—— I don’t know. ________.
| A．It depends | B．Not at all | C．It doesn’t matter | D．Never mind |
. Use your head，you’ll have an idea.
| A．or | B．and | C．but | D．so |
There arestudents in our schoo1.
| A．three thousand | B．three thousand of |
| C．three thousands | D．three thousands of |
Some people find the film Avatar difficult______.
| A．to understand | B．to be understood |
| C．understood | D．being understood |
This maths problem isthat one．
| A．not so easy as | B．more easy than | C．as easier as | D．easy than |