走完同一段路，甲要用小时，乙要用小时，谁走的快一些．（ ）A.甲 B.乙 C.无法确定
If you find yourself ______ no one will help you, please call me.
The government has taken some measures to solve the shortage of water, but it may be some time __ the situation improves.
— Why was it so noisy over there? — The Twins were surrounded by their fans ____ they stepped out of the hall.
Among the many dangers_________-- sailors have to face, probably the greatest of all is fog.
Mr. Black is willing to do ____________ Mrs．Black tells him to do．
小时，乙要用
小时，谁走的快一些．（ ）
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