Creating better health care, education and housing for everyone is a simple idea, but ____ which is hard to put into practice．
| A．one | B．that | C．the one | D．the other |
The smile on Mother's face suggests that she _________ satisfied with what her daughter has done.
| A．should be | B．is |
| C．was | D．be |
A real friend will help you when you are in trouble while fair-weather friends will _________ you.
| A．ignore | B．support |
| C．honour | D．recognize |
If you don't want to be _________ the mercy of others, you'll have to start a business of your own.
| A．in | B．at |
| C．for | D．on |
_________ Mary likes chatting, she is careful about making friendswith strangers online.
| A．Even though | B．No matter |
| C．As long as | D．As a consequence |
_________ has been proved in study that seat belts save lives.
| A．Want | B．As |
| C．That | D．It |