We have no paper ().

单项选择题She went to Beijing () October 2 2010 and came back ()a cold morning last year.

A．in; on
B．on; in
C．on; on
D．in; in

单项选择题Unless he () to help us, we shall lose the game.

A．promises
B．will promise
C．would promise
D．had promised

单项选择题Come on, Harry, why stand there alone We'll go to play ballgames. How about () us

A．taking part in
B．joining
C．joining in
D．attending

单项选择题The citizens didn't feel safe at all after several families had their house () sat night and a lot of things stolen.

A．broken in
B．broken into
C．to be broken into
D．break in

单项选择题It is said that a grave of a middle aged man () about 2,300 BC was found by some English archaeologists in the year of 2002.

A．dating back
B．dated back to
C．dating back to
D．dated from