来自金振林的问题
Whenyourfriendsareintrouble,youshonlddoall___________them.A.youcanhelpB.youcantohelpC.thatyoucanhelpD.whatyoucanhelp重在讲解,不在答案（越具体越好）
Whenyourfriendsareintrouble,youshonlddoall___________them.
A.youcanhelp
B.youcantohelp
C.thatyoucanhelp
D.whatyoucanhelp
重在讲解,不在答案（越具体越好）
