问题

Tony, my best friend, has done _______ he can to help me out of trouble.

A:all that
B:all what
C:which
D:all which

正确答案是：

同类题型

About the economical crisis that he decided to look for more information about it. — _____.[ ]

China isn’t the country _________she used to be 50 years ago

Mom, can I buy some juice — ______. Go and buy some yourself.

our good friend, will share your joys and sorrow

Ann goes to play football every day.—Oh But she ______ it.