—Is the blue ruler _______?
—No. _______ ruler is red.
| A．your; My | B．yours; My | C．yours; Mine | D．your; Mine |
He wrote books _______ they could learn about how he treated the sick.
| A．not only | B．such that | C．so that | D．in order to |
I think he is one of ___________ players in the world.
| A．good | B．better | C．best | D．the best |
You shouldn’t drive for more than three hours without ______ a rest.
| A．have | B．to have | C．having | D．had |
There were few doctors, _____ he had to work very hard _____ his own.
| A．and; in | B．because; at | C．so; on | D．when; for |
Many people were dying ________ they didn’t get to hospital quickly enough.
| A．but | B．so | C．and | D．because |