—Who______ it be that is knocking at the door?
—It ______ be Father, but I’m not sure.
| A．can; must | B．can; may | C．must; can | D．may; must |
____out how to put our furniture or we'll have to wait for another week to move in ．
| A．Figuring | B．To figure |
| C．Figure | D．Figured |
In his youth, Ma Yun finally attended Hangzhou Teacher's Institutehe failed the entrance exam twice
| A．unless | B．after |
| C．since | D．until |
____carefully for a long time, the opening was a great success
| A．To have been prepared |
| B．Having been prepared |
| C．To be prepared |
| D．Being prepared |
–He ____ the Most Popular Teacher in his hometown, right?
-Yes. ten years before he came to this school
| A．is awarded | B．has awarded |
| C．was awarded | D．awarded |
We will have six-day holiday during the coming APEC meetingstraffic on the roads.
| A．to ease | B．easing |
| C．ease | D．having eased |