THE CLASS DISCUSSION WAS SHORT, ... WE GAINED SOME NEW KNOWLEDGE F...

13. - 3500 CAU TRAC NGHIEM ON TAP AV THCS
3500 CAU TRAC NGHIEM ON TAP AV THCS

13. The class discussion was short, ... we gained some new

knowledge from it.

a. however

b. moreover

c. although

d. therefore

 a