While I ________to the programs, my mother ________outside.
| A．listened; was washing |
| B．was listening; washed |
| C．was listening; was washing |
| D．was listening; is washing |
Hurry up! Once the concert starts, nobody _______ to enter the concert hall.
| A．allows | B．allowed |
| C．is allowed | D．is allowing |
Your dream will come true _______ you put your heart and soul into it.
| A．if | B．unless |
| C．although | D．until |
—Could you please have a walk with me?
—Sorry, I _______. I have something important to do now.
| A．mustn’t | B．needn’t |
| C．can’t | D．may not |
—Why are you in such a hurry, John?
—There _______ an NBA basketball game in ten minutes.
| A．will be | B．was |
| C．would be | D．has been |
—_______ will your father come back from Beijing? —In two days.
| A．How often | B．How long |
| C．How far | D．How soon |