问题
选择题
—Will you give me a hand? I have some trouble_______ the scientific problem.
—Don't worry. I'll try my best to help you _______.
A．solving; in five minutes
B．to solve; in five-minute
C．to solve; after five minutes
D．solving; after five-minutes
答案
答案：A
题目分析：句意：你能帮我一下吗？我不会解这道科学题。别担心。我会在五分钟之后尽力帮助你的。Have trouble （in） doing sth“做某事遇到麻烦”，in可以省略。In+一段时间表示“多久以后”。故选A。
