--- She cannot ________ her purse . --- Yes, she doesn’t know__________.
—Can you play ________ piano? —No, I can’t. But I can play ________ basketball.
—Hello! This is David. Can I speak to Tom? —Yes, ___________.
At least 300 million people are using QQby Ma Huateng to chat online.
— Do you need an apple or a pear? —, I really don’t mind.
— Peter, you got to school by taxi? —Oh, Itake a taxi to school, but my bike needs repairing today.