根据句意及首字母或者图片提示填空。

1. English isn't d_______ to learn, if you have an efficient method.

2. I like v_______ very much, for it is very fun.

3. Playing _______ is indeed really interesting.

4. My sister has a ping-pong _______.

5. _______ is young boys' favorite.

6. We need a _______ ball, Dad!

7. Does your sister have a _______?

8. —Where is your pencil, Dave? —It's in the _______ on the desk.

9. There are many _______ on the tree.

10.  His sister has two _______ They're very nice.