That kind of plant can be made ______ paper and paper can be made ______ wood.
The subway was crowded with passengers going home from market, most of ________carrying heavy bags and baskets full of fruits and vegetables they had bought there.
You can get the best result ______you carry out the experiment under the desired conditions.
It was reported that an agreement ____ between the two companies and that they would carry out a project together.
Our English teacher , having explained to us how to design a project, allowed us a whole week’s preparation and then ______the class.
Mr White _______his racing bicycle by himself yesterday, but I’m not sure whether it is ready