It took them___to visit our school.
It took them___to visit our school.
one and a half hour
one hour and a half hour
one hours and a half
one and a half hours
参考答案:one and a half hour
It took them___to visit our school.
one and a half hour
one hour and a half hour
one hours and a half
one and a half hours
参考答案:one and a half hour