WHILE ________ TO HELP TIM WITH HIS MATH, I GOT IMPATIENT BECAUSE...

54. - 2 DE THI THU DH MON THI TIENG ANH VA DAP AN
Tiếng Anh 2 DE THI THU DH MON THI TIENG ANH VA DAP AN

54. While ________ to help Tim with his math, I got impatient because he wouldn’t pay attention to what I was

saying.

a. I am trying

b. having tried

c. I try

d. trying