Without facts, we can’t form a correct opinion, for we need to have actual knowledge _______ our thinking.
| A．which to be based on | B．which to base on |
| C．on which to base | D．which to base |
I’m afraid this is the best way ______ we can think of ______ you.
| A．that; helping | B．that; to help |
| C．which; helping | D．which; to help |
Reading books is very important for developing the students’ understanding of the world,
_______?
| A．is it | B．are they | C．isn’t it | D．aren’t they |
He sat on the sofa, with his arms ________ and eyes _______ on TV.
| A．crossed; looked | B．crossed; looking |
| C．crossing; looked | D．crossing; looking |
_____ you make a promise, you should keep it.
| A．Though | B．Unless | C．Now that | D．Even if |
Every time ______ they met, they would talk several hours together about the persons and things _______ they remembered in the middle school.
| A．that; who | B．when; which |
| C．/; that | D．which; / |