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.