—Sally, do you mind if I take off my jacket?
—Of course not． ．
| A．It doesn't matter | B．Make yourself at home |
| C．Enjoy yourself | D．Forget it |
．---I give up. It’s too hard.
---Really? I__________you could make it through.
| A．think | B．thought | C．have thought | D．am thinking |
．Walking together, my father and I used to have a lot of conversations I __________learned lessons from his experience.
| A．that | B．where | C．when | D．through which |
________a slight chance that Guo Jingjing will take part in the 2010 London Olympic Games.
| A．It has | B．They are | C．There remains | D．It remains |
．The cousins are alike in age, but__________they are as different as day and night.
| A．anyhow | B．besides | C．otherwise | D．moreover |
In America, if__________friend has invited you to drop by anytime, it is__________best to call before visiting to make sure it is convenient for him.
| A．a; a | B．a; 不填 | C．the; a | D．the; 不填 |