----Jack, can you make a sentence to ________ the meaning of the new phrase? ----Well…
oh, Mary , there is only one apple left.Let me cut it ___ halves.
We must show concern ___ each other.
---Peter, you set down the result of the experiment, ___________? ---Oh, yes, but I need to find my pen first.
Rio De Janeiro, ___________the right to host the 2016 Olympic Games, will be occupied in building stadiums.
There is growing tendency among middle-school students___________they will do some voluntary work during their vacation.