A．That Bob does not get along with his lab partner.B．That the students performed the experiment correctly.C．That the students had problems, and could not complete the lab experiment.D．That there was a fire in the lab during the experiment.
A．That Bob does not get along with his lab partner.
B．That the students performed the experiment correctly.
C．That the students had problems, and could not complete the lab experiment.
D．That there was a fire in the lab during the experiment.