There are many kinds of birds in Australia,and over 140 species of snakes,many of
____are extremely dangerous.
| A．them | B．which |
| C．what | D．those |
The practice of children working in factories has nearly ________.
| A．died out | B．died off |
| C．called out | D．called off |
When she heard the bad news,she ________ completely.
| A．broke away | B．broke out |
| C．broke down | D．broke through |
He ________ the problem ________ in his mind for a whole week before he did anything about it.
| A．switched;on | B．kicked;up |
| C．turned;over | D．took;on |
Studying abroad is quite different from life in China.It took me nearly half a year to ________ the language problem and culture shock.
| A．turn over | B．look over |
| C．go over | D．get over |
As she became an artist,she ________ realize that all artists were a product of their culture.
| A．came to | B．kept to |
| C．took to | D．went to |