（）on the sand, I watched the clouds and listened to the singing of the birds.
A.正确答案ALying
B.Laying
C.Lie
D.Lay
（）on the sand, I watched the clouds and listened to the singing of the birds.
（）on the sand, I watched the clouds and listened to the singing of the birds.
A.正确答案ALying
B.Laying
C.Lie
D.Lay
