Excuse me, may I ask you some questions? — Of course, but I only have five minutes to ______.

Look! Is that Mr. Green?—It be Mr. Green. He has gone to Shanghai.

Emmas has to stay _______ home to look _______ her grandpa.[ ]

I don’t think we can find a new day to work out the problem. — But we’d better not .

Is this __________ ruler? —No, it’s my ruler. __________ is over there.