The man drew a series of pictures about Wechat____how to use this software．（ ）
| A． |
to show |
B． |
showed |
C． |
shows |
D． |
to showing |
﹣ do you visit your grandparents，Tom？
﹣Twice a month．（ ）
A．How muchB．How oftenC．How longD．How soon
﹣ you give me a hand？ I can't move the box by myself．
﹣No problem．（ ）
A．CouldB．ShouldC．MustD．Need
Wash your hands before meals， you may get ill．（ ）
A．andB．butC．orD．so
Usually I make breakfast for my family Saturdays．（ ）
A．atB．inC．onD．to
Mr．Jackson is a popular writer， and we all like reading books．（ ）
A．hisB．herC．theirD．your