仙茅根具备的性状特征是（）
A.菊花心
B.蚯蚓头
C.结子斗
D.菠萝纹
E.蚯蚓纹
参考答案：E
If you want to borrow a football after school, your student ____ here.
A．has to leave
B．mustleave
C．has to be left
D．mustbe left
