— Where does your aunt work?
— She works _________.
| A．in a office | B．on a school |
| C．on a farm | D．on a hospital |
---- why not swim in the river?
---oh, no. our teacher told us _____ here. It’s dangerous.
| A．will swim | B．will not swim |
| C．to swim | D．not to swim |
I can’t swim. And she can’t, _______.
| A．too | B．also |
| C．but | D．either |
I was doing my homework _______ a dog came in.
| A．when | B．while |
| C．as | D．At |
—Marycan’thelp___thehouse.Why?—Becausesheisbusy____ahotelreservation.
| A．toclean;making | B．cleaning;making |
| C．cleaning;tomake | D．toclean;tomake |
It is about _______by bus from here to Harbin.
| A．one and half hours | B．one and a half hour |
| C．one hour and half | D．one and a half hours |