they,the,tree,sing,now,under(连接现在进行时的疑问句)
问题描述：
they,the,tree,sing,now,under(连接现在进行时的疑问句)
答
陈述句：
They are singing under the tree.他们在树下唱歌.
疑问句:
Are they singing under the tree?他们在树下唱歌吗?
我的回答你满意吗?不明白的再问哟!