While ____the dog, you should take care not to ____.Otherwise, it may be dangerous to strangers.
| A．walking; get loose | B．walk; be loose |
| C．walking for; get it loose | D．training; get it run |
I refuse to lie about it--it’s against all my _________.
| A．emotions | B．principles | C．regulations | D．opinions |
It will take a long time for the effective use of natural resources _________.
| A．to be made | B．to make | C．being made | D．making |
_________ hard one may work, one cannot master a foreign language in a year or two.
| A．Though | B．As | C．While | D．However |
That is just _________ challenging job all the workers want to get. Do you have anyone in _________ mind for it?
| A．a; the | B．the; / | C．the; the | D．a; / |
--Jack! I have left my key to the office at home.
-- Don’t worry. I _________ it for you. Wait a minute.
| A．get | B．am going to get | C．will get | D．am getting |