Cruel words are weapons? is a metaphor?

A(n) __ clause should always be separated from the rest of the sentence by commas

Ineed on this app i was at ambitious but then all of the sudden i got put back to about 30 points. is there something i can do about this, because i lost all of my progress in this app.

What style should a speaker use when preparing a speech for his or her school's parent teacher association? a. excited b. casual c. strict d. formal