If mary ____ shopping this afternoon,please ask her to writhe a shopping list first .
问题描述：
If mary ____ shopping this afternoon,please ask her to writhe a shopping list first .
A will go
B goes
C went
D has gone
答
B能帮忙解释一下吗 。 为什么选B 啊因为主句无论用一般将来时态或祈使句，其从句都要使用最简单的基本时态，也就是一般现在时。