10. Alan works hard in his new job, and he wants to know ________ his boss feels about him.
(A) how
(B) that
(C) whether
(D) why
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統計: A(65), B(18), C(10), D(7), E(0) #3895336
統計: A(65), B(18), C(10), D(7), E(0) #3895336