This kind of work by hand, but now it is done by electricity.
| A．get used to doing | B．used to be done |
| C．was used to doing | D．used to do it |
You may not understand what they have done, because they ____ a younger generation.
| A．belong to | B．are belonged to | C．are belonging to | D．will be belonged to |
Misunderstanding may ______ if people fail to communicate with each other.
| A．raise | B．rise | C．arise | D．add up |
My friend Martin was seriously affected by a strange fever; _____ , he could neither eat nor sleep.
| A．after all | B．as a result | C．on the other hand | D．however |
Yao Ming, who ______ the Houston Rockets, is working hard to make his dream come true.
| A．joined | B．joined in | C．took part in | D．competed in |
Much attention should be paid _______ the wild animals as many of them are dying out.
| A．protect | B．to protect | C．protecting | D．to protecting |