( )matters much( ) the headmaster supports our activity

问题描述:

( )matters much( ) the headmaster supports our activity
1.It;whether
2.What;whether
3.As;that
4.That;if

it 是形式主语,真正的主语是后面 the headmaster supports our activity.
这句话的意思是
校长是否支持我们的活动非常紧要.