填空 (每空1分，共5分)
What are these? They are _______(手表) .
These are _______/tu:/ books. They are mine.
This is my _______(friend) schoolbag. It’s very nice.
Is the girl Alice?   Yes, _____is. (肯定回答)
那是一串钥匙。 That is a set of _______.