【题目】We can save water _______ not playing water games.

【题目】—Who ________ they? ( )

【题目】— ________.( )

【题目】— I ask you some questions? ( )

【题目】In summer, it is too hot outside. _______ the students like playing on the playground.

【题目】My favourite school work is ______. ( )

【题目】—________ book is this? ( )

【题目】This is ____ football. ( )

【题目】—Are these books all ________? ( )

【题目】--______she? ( )