—Tina, I have cleaned most of the windows. —That's very kind you. It's difficult me to do it all by myself.
Jack found ______ hard to get along with the other boys in his class.
I have _______ to tell you. Please listen to me.
Tom is sad. Everyone is trying to _______.
Sandy’s family can’t afford _______ a new house at present.
Look at the skirt. I bought it for my daughter ______ Children’s Day.