Bill was doing a lot of physical exercise to build up his______.

We have strong ________ for believing that the newly-invented material is not only popular but also a monument to the eco-friendly lifestyle.

The meetings are very short, so there is little _____ to have a real discussion.

One advantage of living on the top floor of a high rise is that you can get a good______of the city. 

The sooner we students ________to the new school，the better it will be ________our  studies.