Giúp mình với:
31.a)before. b)after. c)ago. d) yết
32.a)tớ. b)buy. c) thought. d) with
33.a)switched b)started. c) stopped d) moved
34 a) computer b) modern c) typist d) printer
35 a) skillful b) modern c) similar d) different
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Sinh Học lớp 12
