摘要：5．the→an
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The hen________in her nest，and she will________an egg in a moment．
- A.is lying，lie
- B.is laying，lay
- C.is lying，lay
- D.is laying，lie
The girl________ an English song in the next room is Tom's sister.
- A.who is singing
- B.is singing
- C.sang
- D.was singing