27B clap (clap hand:vỗ tay)
28D by
29D air
30B saying
31D yourself
32B interior : nội thất
33C accounts
34A long-term
35D submission : sự nộp bài-> submit(v)
36D regulated
37A competent
38B in total
39D projector: máy chiếu
40C put sth off = delay: trì hoãn
41A widely (adv) ( V : become + adv + adj)
42D whole (on the whole = in general: nhìn chung )
43C soundtracks: nhạc nền
44A employees