-- Has your sister come back? --Yes, she has. She______ back two days ago.
– Will you help me make a shopping list(购物清单)? -- .
The desk is made ______ wood.
______ far as I know, her mother is a very famous writer.
He _____ go out with his parents, but now he ______ staying at home alone.
–Lily won the first prize in yesterday’s dancing competition.– Her mother must be_______ her.