4. Those who have ever _____ themselves to the COVID-19 patients are
asked to stay at the individual room and accept the test.
(A)discussed
(B) harmed
(C) protected
(D) exposed
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統計: A(4), B(10), C(31), D(99), E(0) #2877884
統計: A(4), B(10), C(31), D(99), E(0) #2877884