It was not until 2010, _______his son took over the company, _______ the crisis was dealt with.

Shanghai authorities have guaranteed the quality ofthe city’s drinking water _____ more than 7500 rotting pigs ______ floating onthe Huangpu River in the past week.

What does the sign over there say— No person ______ enter the area without the official permission.

Must I finish that work today—-No, you _____. You may finish it in three days.

Could you tell me how many colours_______in a rainbow