问题
选择题
He met many problems ______ he was going over his lessons.
A．before
B．as soon as
C．since
D．while
答案
答案：D
翻译：当他正在复习他的功课时他遇见了很多困难
A在。。。。之前
B一。。。。就
C自从
D当。。。。时
故选D
搜题请搜索小程序“爱下问搜题”
He met many problems ______ he was going over his lessons.
A．before
B．as soon as
C．since
D．while
答案：D
翻译：当他正在复习他的功课时他遇见了很多困难
A在。。。。之前
B一。。。。就
C自从
D当。。。。时
故选D
