My father has ______ for two weeks. I miss him so much.

一 Hi, Jim! Is this your bike or Mary’s?— It’s mine, not .

is the ticket of the museum for children? — Well, it’s free for everyone.

My brother only sits_____ about 30 minutes when he watches TV. [ ]

In our school library, there____ a number of books on science and the number of them ______ growing larger and larger.