Could you lend me your pen? —Of course. I have two,and ______ of them write well.

It was the first time that a Canadian ________ a gold medal in a Winter Olympics . [ ]

Toyota’s chief executive said the company grew too fast to _____ safety controls.

Tom didn’t want to make trouble in the train. Therefore, he his railway ticket when asked to do so on his way home.

Now the question that you must carefully consider is _____ can be put into practice.