16. Mr. Olson went to the doctor when he found he ________ his hair. He hoped he would be able to keep his thick hair.
(A) was losing
(B) is losing
(C) will lose
(D) has lost
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統計: A(10), B(2), C(0), D(1), E(0) #3895342
統計: A(10), B(2), C(0), D(1), E(0) #3895342