Tourists should keep in mind that they are representing their motherland while abroad, so they need be _______ about their behaviour.

Do you need any help, Lucy? -YesThe job is ________ I could do myself[ ]

下列各句中，没有语病的一句是（ ）

How do you usually go to the club —________. I like walking.

When he was driving home, he was stopped by the policeman and was _______ of speeding.