I catch a cold 【now and then】.A. alwaysB. occasio
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I catch a cold 【now and then】.
A. always
B. occasionally
C. constantly
D. regularly
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答案：B
句意：我偶尔会得感冒。句中的now and then意为“时而，偶尔”。B .occasionally意为“时而，偶尔”，与now and then意思相近。A.always意为“经常”;C.constantly意为“不断”;D.regularly意为“经常地，定时地”。