ANDREW ... THE TEST BEFORE SO HE... IT VERY EASY.A. DID/ HAD FOUND...

6. - DAP AN DE KTRA HK1 TANH NEW
Tiếng Anh DAP AN DE KTRA HK1 TANH NEW

6. Andrew ... the test before so he... it very easy.

a. did/ had found

b. had done/ found

b. was doing/ found

d. did/ was founding