They have a piano lesson . [ ] A. each six days B. every six day C. every a few
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![They have a piano lesson . [ ] A. each six days B. every six day C. every a few](/pic/43_1002176.jpg)
They have a piano lesson _________.
[]
A. each six days
B. every six day
C. every a few days
D. every sixth day
试题答案
答案：D
They have a piano lesson _________.
[]
A. each six days
B. every six day
C. every a few days
D. every sixth day
答案：D