问题

Jessica ought to stop work.She has a headache because she _______ too long.
A:read
B:is reading
C:had read
D:has been reading;
B:is reading
C:had read
D:has been reading;
正确答案是:
同类题型
as her weakness, ___________ that doesn’t mean she is not qualified for her job.
The medicine works more effectively ______ you drinksome hot water after taking it.
raffic in the city was ____ today,so Mary got home earlier than usual
and gentlemen, please raise your glasses anddrink a _______ to the success of the new company.