—Could you tell me how your mother usually goes to work?
—Yes. If it is fine, she ________ to her office.
| A．will walk | B．will go on foot |
| C．walks | D．would go on foot |
——Would you mind if I keep the door open?
——____________.
| A．Yes, do it | B．No, of course not | C．Yes, go ahead | D．No, you can’t open it |
In the north people sometimes tie straw ropes (草绳) round the trees in winter to ______ them from the cold.
| A．stop | B．prevent | C．save | D．protect |
It’s time that you __________ the whole book.
| A．must go over | B．can go over | C．went over | D．have gone over |
When will you ___________ the entrance examinations, next June or next July ?
| A．join | B．join in | C．take | D．take part in |
If it is quite ___________ to you, I will visit you next Tuesday.
| A．convenient | B．fair | C．easy | D．comfortable |