------Have you got used to the Chinese food, Robert?
------Yes, but I don't like ________ when a Chinese host keeps serving me the food I don't like.
| A．this | B．that | C．those | D．it |
She is a crazy fan of this singer. ________ she listens to his songs hundreds of times, she will never get tired.
| A．If | B．Unless ． | C．As long as ． | D．Even if |
Everyone in our class was working hard and doing what we could ________ a good university.
| A．enter | B．to enter | C．entering | D．entered |
QQ, ________ you can chat with your friends, makes communication easy.
| A．how | B．where | C．that | D．which |
I was watching the news on TV ________ the power went off.
| A．when | B．as | C．while | D．until ． |
—How long will it be ________ the 30th Olympic Games is held in London?
—It won’t be two years, I think.
| A．when | B．that | C．before | D．since |