To have a dinner at a restaurant on the Eve of the Spring Festival, you need to reserve the restaurantmonths before it, ____? [ ]

He ____ you more help even though he was very busy .

下列各句中，没有语病的一句是（ ）

______ eraser is this— It’s my sister’s.

Tom didn’t want to make trouble in the train. Therefore, he his railway ticket when asked to do so on his way home.