A.\(12m/{s^2}\)
B.\( - 21m/s\)
C.\( - 12m/{s^2}\)
D.\( - 12m/s\)

A.Hình thang
B.Hình thang cân
C.Tam giác đều
D.Tam giác cân

A.Tam giác đều
B.Tam giác cân
C.Tam giác vuông
D.Tam giác vuông cân

A.interrupt
B.generate
C.maintain
D.involve

A.The difference of making new friends between girls and boys.
B.Social media affects friendship positively and negatively.
C.Teenagers are making and keeping friends in a surprising way.
D.Social friendship is longer and more open than a real-life one.

A.honest
B.hospitable
C.mean
D.kind

A.honest
B.hospitable
C.mean
D.kind

A.woman
B.man
C.male
D.gender

A.polluted
B.corrupted
C.defiled
D.purified

A.polluted
B.corrupted
C.defiled
D.purified