—How do you think he managed to improve his English in such a short time?
—______ four hours on it every day．
A．Because of spending B．To spend
C．By spending D．Spending
In our ______,anyone ______ breaks the law should be punished．
A．opinions;that B．opinions;who C．opinion;he D．opinion;who
Even on a cold day he prefers ______ out to play football ______at home．
A．going;rather stay B．going;to staying
C．to go;rather than staying D．to do;rather than to stay
It was in the lab______ was taken charge of by Professor Zhang ____ they did the experiment．
A．where, that B．which, where C．that, where D．which, that
—The railway station,please．I have to be there in ten minutes．
—______,but I’ll do my best．
A．No problem B．OK C．I can’t promise D．I can’t do that
—Is it for two months ______ they have stayed here?
—No,it is only three weeks ______they arrived here．
A．that;since B．that;when C．when;that D．since;before
