The great chance he has been looking forward to _______ at last

Does Bill do his new job well— ________ his old job I’m afraid there’sno hope for him

I soon found that the work I was doing had already been done by somebodyelse, , I was wasting my time

Mr. Smith, may I have a word with you? I’ll try not to __________ too much of your time．

The government________air quality in urban areas from levels one to five: excellent, fairly good, slightly polluted, poor and dangerous.