【题目】Let’s ______ outdoors. ( )

【题目】In the USA you must wear a when you ride a bike. ( )

【题目】Don’t ______ on the sofa. It’s dangerous. ( )

【题目】It’s cold. Don’t run ______ the stairs. You ______ get hurt. ( )

【题目】I like ________ drink. ( )

【题目】There ___________ no time to have breakfast. ( )

【题目】I will help my mother ______ the floor. ( )

【题目】当你迟到了，你应该对老师说： ( )

【题目】This knife is very ______. You may cut ______. ( )

【题目】Lingling is sleeping, her sister is singing. ( )