X : 8 = 121 (dư 5)

209+79-86+896

10+20

Bài 1 A 4x^2y^2 B 3x^3 y^2 z^4 x(-8x^4y^3z)

1:Mary is the……….in her class. A:tall B: tallest C:taller D: the taller *2: In Viet Nam, it is normally……………. in the South than in the North. A. hot B. hotter C. hottest D. hoter *3: The food is …………… than the last time I ate it. A. badder B. bad C. worse D. worst *4: Ho Chi Minh city is ………….. than Hanoi. A. big B. bigger C. biggest D. biger * 1 điểm