单项选择题

Children going to school must have a chance to______ excess physical energy; children even more than adults require and enjoy physical exercise and games of all kinds.

A．work off
B．let off
C．play off
D．put off
<上一题 目录 下一题>
热门 试题

单项选择题
It would be very difficult for a library to be without dictionaries and encyclopedia; such reference books are______.
A．unavoidable
B．inevitable
C．indispensable
D．fundamental
单项选择题
While the total number of farmers engaged in the agriculture production is barely half ______it used to be in 1959, the size of the average farm has tripled.
A．that
B．what
C．which
D．how
相关试题