Only ______according to the directions can the medicine be quite effective.
---What did the Englishman say? ---Oh, he asked where ____ .
I remember a ____ famous scientist said that we should believe in ourselves first of all.
Have you got any particular plans for the coming holiday? Yes. _____, I’m going to visit some homes for the old in the city.
_____ get a better score, she has been studying hard all day.
It was necessary to _____ the factory building as the company was doing more and more business.