19. Richard _____ all his friends to his birthday party, which will be held next week.
(A) will invite
(B) invites
(C) invited
(D) has invited
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統計: A(5), B(8), C(0), D(4), E(0) #3860291
統計: A(5), B(8), C(0), D(4), E(0) #3860291