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
B:worked
C:has been working
D:had been working
正确答案是:
同类题型
This blue shirt doesn’t fit you.I think that black one_______good________you.A.will look;in
Is this company ______ your elder sister once worked in—- Yes, it is.
____ half of the English novel, and I’ll try to finish it at the weekend.
unemployment and crime are high, itcan be assumed that the latter is due to the former.