was, were, will be, shall be, prefer, prefers, preferred

During the holiday week, one-third of the students ________ willing to write course papers but ten percent of the teachers ________ in-class examinations.

predictive meaning

end-focus

coordination

parallelism

Why do most contemporary English grammarians adopt a two-tense system?

Explain the principle of proximity of concord with examples.

Using a tag question:

Let's do it together.

Using extraposition:

To wear a respirator mask when you're working with fiberglass might be a good idea.

Using discontinuity:

Excessive exposure to violence on TV is more harmful than expected to children.

Using cleaving for object :

He likes playing games most.