I used to drink a lot of tea but these days I coffee.A. preferredB. preferC. have prefer

问题补充：

I used to drink a lot of tea but these days I coffee.

A. preferred

B. prefer

C. have preferred

D. am preferring

答案：

A. preferred

(答案→)B. prefer

C. have preferred

D. am preferring

解析：考查时态。本题的关键词是these days说明讲述的是现在一段时间里经常发生的事情，故使用一般现在时。句意：我过去常常喝很多的茶，但是目前这段时间我喜欢喝咖啡。故B正确。