Determination is a kind of basic quality and this is ___ it takes to do jobs well.

The Parkers bought a new house, but         will need a lot of work before they can move in. 

I ’ve made _____a habit to sleep early and rise early, which enables me to keep energetic .

Sometimes _______turns off the lights in the classroom because every body thinks somebody will do it.

The two men are so alike that strangers find _____ difficult to tell one from the other.