—Where did ________traffic accident happen,sir?—It took place at ________crossroads by the bank.

The environment is getting worse in the present days, so the government must take _______ to stop people _______ too many trees.

_____ the government agrees to give extra money , the theatre will have to close.

—Does _____please you to give gifts to others? —Sure．

—Did you have any trouble with the customs officer?—________ to speak of.