A-A+
Ever since Picasso's paintings were on exhibit
问题详情
Ever since Picasso"s paintings were on exhibition, there ______ large crowds at the museum very day.
A．is
B．have been
C．has been
D．are being请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：在therebe…(表示“存在有……”)结构中，be动词的性数应与它后面的真正主语取得一致。本题主句中的真正主语为largecrowds，据此，可排除A和C。根据eversince引导的从句可判断主句应为完成时，因此排除D，得出B为正确选择。
