33.
(A) contact
(B) contact with
(C) contact of
(D) contact in
(E) contact to

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統計: A(9), B(351), C(57), D(19), E(78) #1309647

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(B) contact with 接觸,...
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The guns help officers keep their distance and avoid accidental   33   the chemical or poisonous substance材料, 物質.

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