在线名词解释大全
专业、全面、易懂的全领域名词百科
首页
>
实用英语语法
>
详细
Thisforeignscientist_____inourcollegeforfifteenyearsanddoesnotwanttoleave.
题型:单选题
选项
A.
worked
B.
is working
C.
works
D.
has been working
正确答案: