IF YOU DON'T UNDERSTAND WHAT ..., PLEASE ASK HIM AFTER CLASS.A. YO...

14. - 3500 CAU TRAC NGHIEM ON TAP AV THCS

3500 CAU TRAC NGHIEM ON TAP AV THCS

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14. If you don't understand what ..., please ask him after class.

a. your teacher explain

b. does your teacher explain

c. your teacher explains

d. your teacher will explain

 c