--- Jack fell off the ladder yesterday，but he is all right now.
---What a lucky dog! He ________himself badly.
| A．should injure | B．might injure | C．should have injured | D．could have injured |
.
I did not accept any of the many offerings, because I found____satisfactory.
| A．neither of them | B．none of them | C．either of them | D．all of them not |
.
Nearly a month had gone by____they showed some sign of giving up the price for which they had held out.
| A．until | B．while | C．before | D．so that |
.
In the years____, the city government will take effective measures to bring the price of the house under control.
| A．following | B．followed | C．follow | D．to follow |
.
According to some doctors, one of the ways to prevent us from growing old is to make sure
that our brains get enough___.
| A．performance | B．exercise | C．experience | D．sport |
.
We are ____faced with the necessity to recognize that having more people implies a lower standard of living.
| A．readily | B．smoothly | C．unavoidably | D．deliberately |