2. The hotel prides itself on _____ a high service standard, which has been praised by customers for over 50 years.
(A) lecturing
(B) launching
(C) meditating
(D) maintaining
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統計: A(7), B(23), C(3), D(290), E(0) #880111
統計: A(7), B(23), C(3), D(290), E(0) #880111