On Halloween, children in American like to _____ as ghosts to frighten people.
| A．dress up | B．put on | C．make up | D．spy on |
Old people need special care in winter, as they are very______ to sudden change of the weather.
| A．sensitive | B．painful | C．attractive | D．familiar |
--- Let’s go to play football, shall we?
--- Sorry, I can’t. I must go over the points the teacher explained ______ I forget them.
| A．after | B．when | C．before | D．since |
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 |