(题文)-- How often does Lara play the trumpets?
--- once or a week, I'm not sure.
A. May be; twice B. Maybe; twice
C. Maybe; two time D. May be; two times
B
【解析】
句意:——劳拉多久吹一次小号?——也许一周一到两次,我不确定。May be可能是,may为情态动词,必须放在主语的后面,maybe或许,大概,为副词形式,放于句首,首先排除A,D; 两次为twice,故答案为B。