They will leave for America ______ four hours.

问题描述:

They will leave for America ______ four hours.
A) in B) from C) till D) to

选A.
in four hours 意为在四小时之后.
全句意为他们将在四小时之后离开到美国.
所以选A.
望采纳o(∩_∩)o..