THIS EXERCISE IS ... HARD FOR ME TO DO.A. VERYB. TOOC. SOD. QUITE...

48. - 3500 CAU TRAC NGHIEM ON TAP AV THCS

3500 CAU TRAC NGHIEM ON TAP AV THCS

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48. This exercise is ... hard for me to do.

a. very

b. too

c. so

d. quite

 b