Don't forget ________ the letter to your friend.
| A．send | B．sent | C．sends | D．to send |
---Who is the tallest boy? ---It ______ be John. John is of medium height.
| A．must | B．needn’t | C．might | D．can’t |
These young trees must ______.
| A．look after well | B．be look after well | C．be looked well | D．be looked after well |
I found ______ not very difficult to keep away from the A/H1N1 Flu.
| A．that | B．this | C．one | D．it |
A tourist will easily lose his way in Beijing ______ he has a map or a guide.
| A．if | B．because | C．unless | D．when |
---I heard you bought a flat in the countryside?
---Yes. I ______ the quiet country ______ the noisy cities. Besides, houses are cheaper.
| A． prefer, to | B．like, than | C．like, to | D．prefer, would rather |