1.Don't ride a motor-bike on the road,Ben.（现在进行时态）2.Grandpa is reading a book in the dining-room.（划线提问）划线部分是a book
问题描述：
1.Don't ride a motor-bike on the road,Ben.（现在进行时态）
2.Grandpa is reading a book in the dining-room.（划线提问）
划线部分是a book
答
1，本，不要在路上骑摩托车。2，爷爷在餐厅看书。划线部分是一本书。天哪，你是小朋友吗，问这么简单的问题。还不给分。
答
.Don't ride a motor-bike on the road,Ben.（现在进行时态）
Ben isn't riding a motor-bike on the road .
2.Grandpa is reading a book in the dining-room.（划线提问）
划线部分是a book
What is grandpa reading in the dining-room?
答
1.Don't ride a motor-bike on the road,Ben.（现在进行时态）
isn't riding a motor-bike on the road,Ben.
2.Grandpa is reading a book in the dining-room.（划线提问）
what is grandpa reading in the dining-room?