Everyone knows that _______ is dangerous to play with fire, but _______ is difficult is to prevent children from playing with fire.
| A．it, it | B．what, what |
| C．it, what | D．what, it |
When she came in, she found a stronger ________ at the back of the classroom with his eyes _______ upon her.
| A．sitting; fixing | B．sat; fixed |
| C．seating; fixed | D．seated; fixed |
Mum, I was wondering if you could lend me a few dollars until I ________ on Friday.
| A．get paid | B．got paid |
| C．have paid | D．had been paid |
－I haven’t got the reference book yet, but I will have a test on the subject next month.
－Don’t worry. You ________ have it by Friday.
| A．can | B．must | C．shall | D．May |
In order to set up early tomorrow, the boy _______ his alarm clock an hour _______.
| A．push; on | B．push; up |
| C．put: forward | D．push; forward |
I agree to his suggestion _______ condition that he drops all charges.
| A．by | B．on | C．in | D．To |