问题
选择题
Mrs. Smith finds it hard to clear up the mess, as her children are always ____ whenever she tries to.
A．in the way
B．on watch
C．in sight
D．on the line
答案
答案：A
考查介词短语。A妨碍；B值班；C在视野之内；D冒极大的危险；句意：斯密斯太太发现很难打扫家里的混乱，因为每当她想这么做孩子们就会很碍事。所以选A。
【考点定位】考查介词短语。