THE PROBLEM IS EASY ENOUGH, BUT ... STUDENTS COULD ANSWER IT.A. A...

40. - 70 DE THI CHUNG CHI B TIENG ANH
70 DE THI CHUNG CHI B TIENG ANH

40. The problem is easy enough, but ... students could answer it.

a. a lot of

b. few

c. a few

d. a great number of

b