--DO you know_______we"ll get there at 3:00 this afternoon?

问题描述:

--DO you know_______we"ll get there at 3:00 this afternoon?
--I"m afraid we"ll be late
A.that B.how C.why D.whether
选哪个

选D.whether:“是否”
你知道我们是否能在今下午三点到那里吗?