-Someone’s knocking at the door. Is it your mother?
-No, dad. It _____be mom. I saw mom ____in the bedroom just now.
| A．must, sleep | B．may, sleeping |
| C．needn’t, sleep | D．can’t , sleeping |
.Although it seemed to be _______ painful experience, he still found it_______ fun.
| A．a,/ | B． /,a |
| C．a, the | D．a ,a |
There isn’t any water in the bottle.
| A．is not | B．is never |
| C．is no | D．is any |
We often take a taxi to go there.
| A．go there by taxi | B．by taxito there |
| C．take taxi go there | D．go there to take a taxi |
He is of medium build.
| A．not tall or short | B．thin or heavy |
| C．of medium height | D．not thin or heavy |
I spent five yuan on this pen. =" I" spent five yuan buying this pen.
| A．by | B．in | C．for | D．on |