单项选择题
A.to work B.work C.working D.worked
（）for the Olympic Games begins about ten years in advan...
单项选择题（）for the Olympic Games begins about ten years in advance.
A.Bid B.To bid C.Bidding D.To be bidden
While（）money, she had worked very long hours.A.raisingB...
单项选择题While（）money, she had worked very long hours.
A.raising B.she was raising C.raised D.to raise
（）all your money in the first week is not a sensible st...
单项选择题（）all your money in the first week is not a sensible strategy.
A.Spending B.To spend C.Spend D.Spended
