Let’s try our best to ____ paper to save the trees.
He bought a lot of fruit,_______apples and oranges.
Bring some ______ and mix them together with bread pieces.
—Can you tell me how to play this computer game?—______. Let me have a look.
— Is this maths problem ___________? — Yes, I can work it out ___________ .
His mother was born (出生) ________ .