— The light in his room is still on. Do you know _________?— To prepare for the coming exam, I think.
—Do you know Xiao Li well?—Yes. I _______ her since she was a little girl.
Our teacher often tells us _______ our own cloth bags when shopping.
—What were you doing this time yesterday? —I _______ some cleaning at home.
Though he’s only 8 years old, he can read _______ on science.
—_______ you read the words in English? —No, I can’t. They are too difficult for me.