【題目】The family with the aim of travelling by plane ________ more than four times what it was several years ago.
A.have increased
B.has increased
C.were increasing
D.was increasing

【答案】B
【解析】句意：坐飛機(jī)旅行的家庭比幾年前增加了四倍多。分析句子可知，本句指的是現(xiàn)在的家庭，因此從時(shí)態(tài)來(lái)說(shuō)，C與D的時(shí)態(tài)是不對(duì)的。本句的主語(yǔ)是the family是單數(shù)，根據(jù)主謂一致的原則，謂語(yǔ)動(dòng)詞要用單三式，因此選B。

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