The two ships came into ____ and 100 people were skilled.

As second-hand smoking is more harmful and dangerous, people want a total _____against smoking in public．

Not having a good ________ of English can be a serious barrier to achieving your goals.

The manager told us that very little ____ was made of the waste material in the past.

一 Why do you choose to work in an international travel agency?一 Well, you know, English is my  . So it is my best choice.