— T-shirt is this? — I think it’s Tom’s.
Hello, grandpa. I am so happy ________ back home during the winter holidays.
—What’s the time by your watch?—It’s ________.
I hear ________ students went to the hall to have the concert.
My sister is only four years old, but she can look after ________ now.
This term, we have ________ new subject—physics. It’s interesting.