-Hey, guys. Do you often have a good time ________ after-school activities?

-Of course, we do. And we always have a lot of time ________ soccer.[ ]

A. to do; to practice

B. doing; practicing

C. to do; practicing

D. doing; to practice

下列既能降低血糖又能促进蛋白质合成的激素是（）

A.糖皮质激素

B.甲状腺激素

C.胰岛素

D.抗利尿激素

E.生长激素