问题
选择题
—How many English words have you learnt now?
—We had learnt over 1,500 English words ___________ the end of last week.
A．at
B．in
C．by
D．with
答案
答案：C
题目分析：句意：你们学会了多少英语单词？到上周末我们已经学了1500多个英语单词。At the end of在···结束时；in the end最后，终于；by the end of在···结束之前，所以选C。