【答案】I had a very good summer __________in shanghai with my parents .

I had a very good summer __________in shanghai with my parents .

A. vacations B. day C. vacation D. times

【答案】

C

【解析】

句意：我和父母在上海度过了一个很好的暑假。A. vacations暑假；B. day天；C. vacation 暑假；D. times次数。有句中的冠词a可知，后面的名词用单数，排除A/D；结合句意可知，“暑假”的英语用summer vacation，故选C。