Being determined is a kind of quality and that's________it takes to do anything properly.
| A．how |
| B．which |
| C．where |
| D．what |
–What do you think the noise was?
--It ___________ a cat.
| A．may be | B．might be |
| C．can have been | D．might have been |
Do you know the _________ of the saying I just quoted?
| A．resource | B．source | C．course | D．cause |
He is very stubborn, it is impossible to argue _____________ what he doesn’t want to.
| A．with him about | B．against him about |
| C．him into doing | D．him to do |
It was playing computer games______ cost the boy plenty of time_____ he ought to have spent doing his homework.
| A．that; that | B．which; that | C．which; when | D．that; when |
The ecologists urged measures _______ to protect the wildlife.
| A．would be made | B．would be taken | C．be taken | D．be made |