.--- Where are you, Nancy? --- Here in the sitting room, _______ to Professor Smith.
James has just arrived, but I didn’t know he ________ until yesterday.
--Was it at 11 o’clock ________ your father came back last night?--Yes, he is always coming back so late.
--Li Mei usually helps others, ________?--Yes, she is kind-hearted.
--Would you like to play basketball with me?--________, but I have too much homework to do.
What impressed me most was that they never ________.