Indicate the end punctuation needed in the blank space in the following sentence. This term paper is due tomorrow and I haven't even started yet___

Which sentence correctly uses parentheses and/or brackets?

Many students have failed that professor's exams___ the most common reason is that students can't stay awake through all those boring lectures.

The daisies were yellow(A) a color Daphne detested(B) and refused to accept.

The manager asked if he could take an extra day off for the holiday___

The solemn ceremony turned out to be a comedy of errors___ to begin with, the photographer slipped on spilled champagne and fell into the cake.

Sheila used to be the CEO(A) of a major financial company(B) but now she spends most of her time raising money for various charities.

Complete the following sentence by selecting the option that correctly uses double and/or single quotation marks. _________________ announced our host at the racetrack.

Which sentence is punctuated correctly?

No one had counted on Vladimir arriving so soon___ his sudden appearance threw a wrench into our plans___ and we had no idea how to extricate ourselves from the situation.

Richard's wife(A) Abigail(B) is an incredibly talented cook(C) and gardener.