Select the correct verb form:

Question

A) Then 50 cc of Lidocaine was instilled.
B) Then 50 cc of Lidocaine were instilled.
My answer is A, were doesn't seem to fit.

Answer 1

Could you also look at this one for me?
Select the correct verb form:
A) Mumps are a common childhood disease.
B) Mumps is a common childhood disease.
I answered B

Answer 2

I disagree with your first answer.

The second one is right.

Answer 3

Thank you:)

Answer 4

You're welcome.

Answer 5

Just took a test and the answer A on the first question is right. Is not were. It is was. I choose were and got it wrong. Was is correct.