We must do as much as we ____to make our country better and more beautiful.
下图中各点之间的气压关系正确的是( )
①A点比B点气压低 ②B点比D点气压高 ③B点和D点气压相等 ④C点比D点气压高
A:What day is it today?
B:It's ____.
A:What lessons do you have?
B:I have ____ and ____ .