Question

every boy and girl of the class-(are/have/were/was)
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Answer 1

every boy and girl of the class have

Answer 2

Answer:

every boy and girl of the class are going for a field trip.

every boy and girl of the class have a surprise test tomorrow.

every boy and girl of the class were excited to participate in the drawing competition.

every boy and girl of the class was wearing a watch.

(If that's what you meant)