单项选择题
If there were fewer management staff, more work （）.
A.would be done B.will be done C.would have be done D.should be done
单项选择题 Having been familiar with his ability, （）.
单项选择题 There are approximately 500 （） now in operation in the United States.
单项选择题 Our factory is much more productive now. This year’s production is five times as much （） it was ten years ago.
