The dying old man opened his mouth as if_______something.
| A．to say | B．saying | C．to have said | D．was saying |
People try to avoid public transportation delays by using their own cars, and this ____ creates further problems.
| A．in turn | B．in all | C．take turns | D．by turns |
It is the test system, _____ the teachers, that is to blame for the heavy burden of middle school students nowadays.
| A．other than | B．or rather | C．rather than | D．more than |
The manager meant ____ the workers that being 5 minutes late meant ____ the company.
| A．to tell, to leave | B．telling, leaving | C．to tell, leaving | D．telling, to leave |
Great changes ______ in China in the past 20 years.
| A．took place | B．have taken place | C．were taken place | D．have been taken place |
The question is ______ it is worth doing.
| A．if | B．whether | C．which | D．what |