Could you go to the movies this evening？

I'd love to．But I'll have important meeting．（　　）

A．theB．aC．an

Amy will be an elder sister．Her parents are going to have child．（　　）

A．twoB．secondC．the second

Who's the woman under the tree？

She's aunt．（　　）

A．Kelly and Joe'sB．Kelly's and Joe

C．Kelly's and Joe's

The harder we study，the result we will get．（　　）

A．goodB．betterC．best

There are many tall trees on sides of the river．（　　）

A．bothB．allC．either