---What do we need to pack for the beach vacation, mum? --- I guess we need sunglasses to _________the sun.
Many trees ________ two years 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.