30. Having their little boy take the surgery could _____ to this young couple as not doing so.
(A) just worry
(B)be just as worry
(C) be just as worrying
(D) have just worried as
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統計: A(10), B(81), C(101), D(43), E(0) #1990744
統計: A(10), B(81), C(101), D(43), E(0) #1990744