Question

Your sister has       bad cold, and you must give her some medicine __ this afternoon.
A. an; /                 B. a; /                  C./;the

Answer 1

B

解析試題分析：句意：你妹妹感冒了，你下午必須給她吃點藥。短語have a cold感冒，要用不定冠詞a；第二空有不定代詞this，不需要冠詞；故選B。
考點：考查冠詞的用法。