Choose the correct answers .
1. Look , there ( ) two cars parking beside the road .
a. are b. were c. is
2. Yesterday three people ( ) injured in an accident .
a. was b. were c. are
3. Tim ( ) a thin boy a few years ago .
a. is b. was c. were
4. Stainless steel ( ) not rust .
a. does b. do c. did
5. A stone ( ) rolling down the hill now .
a. was b.are c. is