It’s too difficult for you to answer. —Why ____ the teacher for help?[ ]

They need to _______ some good ideas to help the old people in the Old People’s Home.

What a nice model boat!—Thank you .Itme three days to make it.

Bill doesn’t like the sunglasses because they can’t ______ the sun well.

Where do you live, Jack?—I live on the _____ floor. My room is No._______.