These problems，______ will seriously affect the growth of teenagers and even the nation's future.
| A．not if solved properly |
| B．if solved properly |
| C．not if properly solved |
| D．if not solved properly |
The Education Department says that school safety has set off alarm bells with frequent reports of serious accidents ________ students got injured or killed.
| A．after which | B．in which | C．by which | D．for which |
Don't ________ personal information such as your name, telephone number and address until you feel comfortable.
| A．give in | B．give off | C．give out | D．give up |
The story of Li Tianyi, the son of ________ famous military singer, driving a BMW without a licence and attacking a couple on the road has drawn the attention of ________ public.
| A．the; the | B．/; the | C．a; an | D．a; the |
The map is one of the best tools a man has _ _ he goes to a new place.
| A．whenever | B．whatever | C．wherever | D．however |
"Genius" is a complicated concept, _ _ many different factors.
| A．involved | B．involving | C．to involve | D．being involved |