Câu hỏi: The big problem was that we really did not understand what was happened

A. problem

B. that

C. did not

D. was happened

Câu 1: Species like snakes, lizards, coyotes, squirrels, and jack rabbits seems to exist quite happily in the desert.

A. like

B. seems to

C. quite happily

D. the

Câu 2: The freshman failed to follow the advice of her senior that he studied hard and not go out too much.

A. freshman

B. her

C. studied

D. not go out

Câu 3: A beaver uses its strong front_teeth to cut down trees and peel_off its bark.

A. its

B. front teeth

C. eel off

D. its

Câu 4: There was a gradual raise in the number of literate males and females in the lowlands.

A. a gradual

B. raise

C. literate

D. the lowlands

Câu 5: The Commitments of Traders Report is released by the Commodity Futures Trading Commission on eleventh day of each month.

A. released by

B. on eleventh

C. of

D. month

Câu 6: Practicing his speaking English everyday, his hope was to get a good job in a foreign company.

A. his

B. everyday

C. his hope

D. to get