___ has taken away my notebook?
| A．Which of you | B．Who of you | C．Which you | D．Who you、 |
These desks and chairs can be ___ to the height of any child.
| A．adjusted | B．adapted | C．fit | D．adopted |
I really don’t know for certain____ they discussed.this important event very secretly.
| A．where was it that | B．where it was that | C．where that | D．it was where that |
_____ you keep on working hard, I don’t mind whether you get good marks in your class.
| A．As long as | B．As soon as | C．As well as | D．as far as |
-----If I wasn’t busy., I could have been back by 5:30 o’clock.
----- What a pity! She____ here to see you.
| A．is | B．was | C．had been | D．has been |
They are determined to work out the task,____difficult it is.
| A．however | B．no matter what | C．no matter what | D．whatever |