Mr．Jackson is a popular writer， and we all like reading books．（　　）

A．hisB．herC．theirD．your

Usually I make breakfast for my family Saturdays．（　　）

A．atB．inC．onD．to

Wash your hands before meals， you may get ill．（　　）

A．andB．butC．orD．so

﹣ you give me a hand？ I can't move the box by myself．

﹣No problem．（　　）

A．CouldB．ShouldC．MustD．Need

﹣ do you visit your grandparents，Tom？

﹣Twice a month．（　　）

A．How muchB．How oftenC．How longD．How soon