It _____ four years since we ______to learn English.
| A．Is , begin | B．has been , began | C．has, been | D．had been ,began |
—I don’t know your e-mail address. Could you please here?
—Sure.
| A．write down it | B．write it down |
| C．take it up | D．take up it |
Frank ______ to see his grandpa if he ______ free tomorrow.
| A．will come, is | B．will come, will be |
| C．comes, is | D．comes, will be |
— ______ salt do we need?
— One spoon is enough.
| A．What | B．What kind of |
| C．How much | D．How many |
I’m going to ______ a new hobby. I want to learn how to take photos.
| A．take down | B．take up |
| C．turn down | D．turn on |
Robots are ______ do the same things as we do.
| A．enough clever to | B．clever enough to |
| C．too clever to | D．so clever that |