You can hardly imagine the difficulty the woman had ____ her children．
| A．brought up | B．to bring up | C．bringing up | D．to have brought up |
The number of various educational programs is increasing, _______ important roles have been realized by more and more people.
| A．whose | B．where | C．which | D．that |
It is dangerous to take ________ from rain under a tree especially during a summer rainstorm.
| A．cover | B．shelter | C．hiding | D．advantage |
--- What do you think of the grammar book?
--- Oh, it really is ________ useful reference book, which is worth reading ________ second time.
| A．a; a | B．an; the | C．an; | D．the; the |
--Mary, remember to come and see us next time you’re in town.
---__________.
| A．Why? I’ll certainly do | B．Sounds nice |
| C．You’re welcome | D．Sure, I will |
——Shall I give you a ride as you live so far away?
——Thank you. ______.
| A．If you like | B．Of course you can |
| C．It couldn’t be better | D．It’s up to you |