Find out the mistakes and correct them. 找出错误并改正。
( ) 1. Jenny and Li Ming arrives at the gym.
A B C
( ) 2. What snacks do you buy yesterday?
A B C
( ) 3. We buy a pair of runner in the store.
A B C
( ) 4. What is your favourite fruits?
A B C
( ) 5. I can show you the skin in my arm.
A B C