The film star was surrounded by the audience ___________ he stepped off the stage.
| A．at once | B．the instant |
| C．now that | D．at the moment |
________my mathematics is very poor.
Don’t worry . I’ll help you________ I can.
| A． as far as | B．as soon as | C． as quickly as | D．as possible as |
_________matters most in learning English is enough practice.
| A．What | B．Why | C．Where | D．Which |
In the factory women _______ 44% of the workforce , and nearly half the mothers with children are in paid work.
| A．build up | B．set up | C．make up | D．take up |
What you said just now______ me of that American professor.
| A．mentioned | B．informed | C．reminded | D．memorized |
The invention of the typewriter was a great_______ to communication and printing.
| A．contribution | B．devotion | C．revolution | D． construction |