Sales of CDs have greatly increased since the early 1990s, when people _______ to enjoy the advantages of this new technology.
| A．begin | B．began |
| C．have begun | D．had begun |
Some drunken drivers think that they may be lucky to________a fine, which may cost their own lives.
| A．get through | B．get along with |
| C．get down to | D．get away with |
Great changes________ in the city, and a lot of factories________.
| A．have been taken place; have been set up |
| B．have taken place; have been set up |
| C．have taken place; have set up |
| D．were taken place; were set up |
He wrote a lot of novels，none of________was translated into a foreign language.
| A．them | B．what | C．that | D．which |
-Can you help me with the maths homework, mom?
-You can't always ________others' help for your homework.Do it by yourself this time, dear.
| A．wait on | B．rely on | C．insist on | D．turn on |
I________through that bitter period without your generous help.
| A．couldn't have gone | B．didn't go |
| C．wouldn't go | D．hadn't gone |