BEFORE DOING THE EXERCISE , YOU SHOUL READ THE...CAREFULLY.A KEY...

10/ - HE THONG DE KIEM TRA TRAC NGHIEM 15''''ANH 10 CB 2
HE THONG DE KIEM TRA TRAC NGHIEM 15''''ANH 10 CB 2

10/ Before doing the exercise , you shoul read the...carefully.

a

key

b

passage

c

answer

d

instruction