写出所给单词的正确形式。
1．My____________(shoe) are under the bed.
2．— Please have a_____________(sit). — Thank you.
3．My bag is old. What about___________(you)?
4．______________(Who) sweater is this?
5．They are white. Please colour______________(they) red.
6．They are the______________(twins) books.
7．It___________(look) like a hat.
8．Excuse_________(I). Are these your coats?
9．The door is____________(lock).
10．Let us__________(look) for a pen.