单选题 Fresh fruits and vegetables are generally less expensive when they are in ______.

【正确答案】 C
【答案解析】[解析] in sale无此搭配,应为on sale,表示“出售,拍卖”,in need表示“需要的”,in season(水果等)应时的,时令的,in time表示“及时地,准时地”。根据题意应选C项。