Some of the following sentences contain subject-verb agreement ...

[jwb375]

Some of the following sentences contain subject-verb agreement errors. Others
  are correct as written. If a sentence contains a subject-verb agreement error, cross
  out the incorrect verb, and write the correct verb in its place. If a sentence has no
  agreement errors, write a C for correct in the left margin.
  The committee have been meeting twice a week for the last year.
 
  What will be an ideal response?

Question 2

Some of the following sentences contain subject-verb agreement errors. Others
  are correct as written. If a sentence contains a subject-verb agreement error, cross
  out the incorrect verb, and write the correct verb in its place. If a sentence has no
  agreement errors, write a C for correct in the left margin.
  At the end of the driveway are a two-car garage.
 
  What will be an ideal response?

[amit]

Answer to Question 1

has been meeting

Answer to Question 2

is

[jwb375]

Excellent

[smrtceo]

Thanks for the timely response, appreciate it