--- Tom, where is your father? --- I’m not sure. He_______ in his office.
---Can you think of any_______tips to protect yourselves against crime?---I have no idea.
Nobody has the right to laugh at others _________ he is right.
Look, there is “u” and “s” in the word university .
---Linda, is there anything else you want to know about China?---Yes, I am still wondering _____________.
When you talk to people, you’d better ________ to show that you’re friendly to them.