My seven-year-old daughter has a great interest in music and _______ Piano classes twice a week over the last three years. 
#99583
A
took
B
is taking
C
had taken
D
has been taking
推荐题目
 He ___________busy yesterday, or he __________you with your experiment.
#100168
A
was; had helped
B
was; would have helped
C
had been; would have helped
D
were; would have helped
--Look! Someone ________ the floor.--Well, it wasn’t me. I went shopping just now. 
#100635
A
had swept
B
has swept
C
was sweeping
D
is sweeping