— What a beautiful skirt you are dressed in today! Where did you buy it?
— ______ ; I bought it in Beijing.
| A．Not beautiful at all | B．Don’t mention it |
| C．It is very kind of you to say so | D．You’re welcome |
Be careful when you cross this very busy street. If not, you may _____ run over by a car.
| A．have | B．get | C．become | D．turn |
My teacher _____ me the key to the classroom but I’m afraid I _____ it.
| A．had given, lost | B．has given, lost | C．gave, have lost | D．has given, have lost |
---John and Tom, you two clean the classroom today, _____?
---But we cleaned it yesterday.
| A．do you | B．will you | C．didn’t you | D．don’t you |
Pleasant as they made it ______ in Jiuzhaogou, we felt tired after the long journey.
| A．to travel | B．travel | C．travelled | D．travelling |
Although the police thought he was the most likely one, _____ they had no exact proof about it, they could not arrest him.
| A．when | B．until | C．before | D．since |