The problem with his students have convinced the teacher that he ...

[cdr_15]

The problem with his students have convinced the teacher that he needs to
  change his attitude.
 
  Correct any subjectverb agreement errors in the following sentences by crossing
  out the incorrect verb form and writing in the correct form above it. If the sentence is
  correct, do nothing to it.

Question 2

Here are the selection of accessories for your new plasma TV.
 
  Correct any subjectverb agreement errors in the following sentences by crossing
  out the incorrect verb form and writing in the correct form above it. If the sentence is
  correct, do nothing to it.

[bblaney]

Answer to Question 1

The problem with his students has convinced the teacher that he needs to change his
attitude.

Answer to Question 2

Here is the selection of accessories for your new plasma TV.

[cdr_15]

Wow, this really help

[Chelseyj.hasty]

Great answer, keep it coming