A. our class wat cancelled; the teacher messaged us she was ill.
The subject of a clause goes in one slot, the verb in another, and so on. Words that modify another word are attached to the word they modify.
The error in the possessive construction is that, instead of passenger's, it should be "passengers'". The apostrophe should be after the letter "s" because the noun is in the plural form. The correct sentence would be "Passengers' concerns about cell phone use on planes are justified."
You can say that you watched tv, did sport, learn for school, clean you room,...
You can imagine something. Think of what you can posibly doing at home.
Cacophony means a harsh, discordant mixture of sound that is annoying or irritating. A combination of sounds that is not in harmony.
The words that form the clue to the meaning of cacophony are:
1) blare, battered, trumpet
2) smash, cymbals
3) anguished, screech, poorly-played saxophone
Trumpet, cymbals, and saxophone are all musical instruments. If these instruments were in very good condition and were played well, then the sounds they would have produced will be harmonious.