they sell baseball bats (否定句)she needs a pair of yellow socks (一般疑问句)the blue trosers are twenty dollars (对划线提问) twenty dollars

问题描述:

they sell baseball bats (否定句)she needs a pair of yellow socks (一般疑问句)
the blue trosers are twenty dollars (对划线提问) twenty dollars

They don't sell baseball bats.(否定句)
Does she need a pair of yellow socks (一般疑问句)
(对划线提问) How much are the blue trousers