Nobody taught ________ Chinese. He learnt it by _______. How clever he is!
Would you mind me how this physics problem ?
He is so careless that he often his school things at home.
—I think Mr Zhang may be in his office. —No, he be there. I saw him just now.
—What do you think of the new bridge? —I have never seen _____ before.
—Happy Teachers’ Day! Here are some flowers for you. — beautiful flowers they are! Thank you!