6. Select the sentence that is correctly written.
(A) Last week, the officers had self-defense training.
(B) Last week, the officers have self-defense training.
(C) Last week, the officers has self-defense training.
(D) The officers, last week, have self-defense training.
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統計: A(916), B(120), C(66), D(26), E(0) #2708689
統計: A(916), B(120), C(66), D(26), E(0) #2708689