谁能把这个从句的引导词补充完整?You could only add courses two weeks in this semester.
问题描述：
谁能把这个从句的引导词补充完整?
You could only add courses two weeks in this semester.
答
You could only add courses no more than two weeks in this semester.
答
You could only add courses "within" two weeks in this semester.
你只能在这学期的两星期内添加课程.
这样会是正确的,但是如果改成“within the first two weeks."会更容易理解.
那样就是：你只能在这学期的前两星期内添加课程.
希望能帮到你^^