单项选择题
The number of students of this school（）large.
A.are B.are not C.isn't D.aren't
单项选择题 The next train to Beijing is（）to arrive at a.m.
单项选择题 The news made the old lady very（）
单项选择题 The new assembly line having been adopted, the factory produced（）cars in as the year before.
