The math problem is _______ difficult and _______ of them can work it out.
| A．too much; a few | B．much too; a few | C．too much; few | D．much too; few |
My father was reading a newspaper while my mother ______dinner.
| A．is cooking | B．cooks |
| C．was cooking | D．to cook |
--How many students are there in the classroom?
--___________.
| A．No | B．No one | C．None | D．Nobody |
Sandy spent too much time _________ computer games.
| A．playing | B．to play | C．played | D．play |
Please _____ who broke the window.
| A．find out | B．find | C．look for | D．look out |
I enjoy learning English, it takes me a lot of time.
| A．as if | B．though | C．because | D．for |