— Can you play the piano?
—Yes, I . I often practice it on weekends.
A:will
B:must
C:can
— Tom just told me a new way he had thought of new words.
— It's great. What do you think of it?
下列句子中没有语病的一句是( )
将8、12、16、20、24、28、32、36、40这9个数,分别填入右图方格内,使每行每列及对角线上的三个数的和都相等.
两个相似五边形,一组对应边的长分别为3cm和4.5cm,如果它们的面积之和是78cm2,则较大的五边形面积是( )cm2.