The key word in the sentence has been ______, so it doesn't make any sense to us.

—Do you like to buy the product an advertisement ______ on TV?—Not really.I think it's better to look before we leap.

Is that the reason ________he explained to all at the meeting for his carelessness in his work?  Actually we think he is a man who is hard ________ himself especially in work. 

I got out of the taxi, ____ the fare and dashed into the station.

 People’s attitudes towards gift giving may         from country to country.