1，The apples on the tree are too high______.
A.be reached B.to reach them C.to reach D.to be reached
2.what made her so worried? -_______.
A.Because she lost her keys B.losing her keys
C.she lost her keys D.lost her keys
3.After the earthquake some people began to dig out who____[trap] in the building.
请不要只写出答案！要写出原因。
參考答案:1,C.因为:词组too..to..太怎么样,以致不能...too+形容词/副词+to do sth.比如:he is too young to drive 他太小以致不能开车.
2,B.用Why开头,是用because 回答.用从句做主语，前面需要加that
3,were trapped.需要被动时，而且是过去发生的。
