i,m waiting for my friendI‘m waiting for my friend -------.I'll go shopping alone.A If she comes B If she will come C If she doesn't come D If she didn't come

i,m waiting for my friendI‘m waiting for my friend -------.I'll go shopping alone.A If she comes B If she will come C If she doesn't come D If she didn't come
i,m waiting for my friend
I‘m waiting for my friend -------.I'll go shopping alone.
A If she comes B If she will come C If she doesn't come D If she didn't come

i,m waiting for my friendI‘m waiting for my friend -------.I'll go shopping alone.A If she comes B If she will come C If she doesn't come D If she didn't come
C If she doesn't come
alone 一个人,说明朋友没来的话,我会一个人去购物,因此排除A B,根据时态可以确定.

C
我在等朋友。如果她不来，那我就自己去购物

C
我在等我朋友，(如果他没来)，我就自己去购物。
逻辑关系排除AB,此外If后面不跟过去式。