图中,大圆和小圆分别表示地球赤道、极圈,箭头表示地球自转方向,阴影部分表示夜半球.其中,表示泰安冬季的图是( )
A:
B:
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D:
— Mr. Li will check our homework this afternoon. _______ you _______ it?
— Not yet. I'm doing it right now.
____ you ____ your brother can join us. We want one of you.
—Sure it is! The government ________ have made great efforts!