Engineering is ______ challenging course of study that requires ______ thoroughunderstanding of mathematics and science.
| A．the; a | B．a; the | C．不填；不填 | D．a; a |
______ the kids have left home , we’ve got a lot of extra space.
| A．Even if | B．Now that |
| C．In case | D．As though |
The news _____ the spaceship succeeded in returning to the earth spread everywhere.
| A．that | B．which |
| C．whether | D．what |
Kate asked the girl to ________ so that she could hear what her husband said on the phone.
| A．slow down | B．come down |
| C．settle down | D．break down |
The population of our village was ____ that of theirs.
| A．as twice large as | B．twice as large as |
| C．twice as much as | D．as twice much as |
— Do you mind my taking the books away?
— ________.
| A．Certainly, please do. | B．No, go ahead |
| C．Yes, not at all | D．No, please don’t |