题目内容
He doesn't know ________ to leave or not.
- A.whether
- B.if
- C.what if
- D.whether if
A
练习册系列答案
相关题目
In order to protect the trees, the old man lives _________ in a _________ house, but he doesn’t fell _________.
|
A.alone, alone, lonely |
B.lonely, alone, alone |
|
C.lonely, lonely, alone |
D.alone, lonely, lonely |