30. --How do you usually go to work? –– I usually drive, but if it is fine, I ______ by bike.
A
will go
B
would go
C
have gone
D
had gone
if 如果,引导的从句已经使用了一般现在时,则主句须用一般将来时;故选项A正确。
由if引导的条件状语从句,使用“主将从现”原则。
对一般将来时的定义和用法不熟悉致错。