your sister playing the piano these days?
A. Is, practise
B. Does, practises
C. Is, practising
D. Does, practised
网友回答
A. Is, practise
B. Does, practises
(答案→)C. Is, practising
D. Does, practised
解析：此题重点考查时态，一般现在时助动词does提前后跟动词原形，B、D答案都不符合该结构，A答案中is不跟动词原形，故选C