.--- I’m sorry I stepped outside for a smoke. I was very tired..
--- There is no ________ for this while you are on duty.
| A．reason | B．excuse | C．cause | D．explanation |
She will tell us that each of us has a role ______ in making the earth a better place to live．
| A．to have played | B．to play | C．to be played | D．to be playing |
—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 |