问题

Tom ________ in the library every night over the last three months.

A:works
B:worked
C:has been working
D:had been working

正确答案是：

同类题型

My parents are ______ famous writers.

________the end of last month, Tina________ a prize.

Ha lot and I need abreak.

Those are my __ pens D。

I________a training course in Hangzhou to study English in the coming summer vacation.[ ]