He ____ (dress) more casually if he ____ (not work) on weekends.
如图,是某日太阳光照图,读图回答:
这一天,北半球的节气应是( )
已知点O(0,0),B(1,2).
Name
book
dog
pens
Amy
√
Jack
Amy and Jack
如图中心点为北极点.读图回答下题.