_____ energy, shut off the hot water after you take a shower．
| A．Save | B．Saving |
| C．To save | D．Saved |
There are many trees on _______ side of the road and _______ sides of the river.
A. both, both B. either, either C. either, both
I _______ talk with my good friends _______ watch TV
A like, better B. prefer, to C. would rather, than
Books are made _____paper and paper is made _____ wood and bamboo
A. from, from B. of, of C. of, from
---May I use your computer, mine is broken.
---Sure, _____________
A. I’d love to B. Thanks a lot C. here you are
Don’t punish him for his mistakes in the exercise-book. ______, he is still a child.
A. At first B. First of all C. After all.