19. He tries his best to____ old friends, because he believes that
old friends are treasures of life.
(A) keep in touch with
(B) drop out
(C) be tired of
(D) get rid of
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統計: A(438), B(18), C(15), D(10), E(0) #2077788
統計: A(438), B(18), C(15), D(10), E(0) #2077788