英语题帮我分析分析1,The apples on the tree are too high______.A.be re

英语题帮我分析分析
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.
下面两位都未回答正确，故提高分值，请高人帮助