Indicate the punctuation needed in the blank space in the following sentence. 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.

The biography I'm reading now says(A) that Marie Antoinette was(B) a marionette(c) whose strings were mainly pulled by her powerful mother

That bad___tempered trade show organizer just demanded that we be at the center before eight o'clock to set___up our booth.

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.

.... ideas are equally valuable, so be sure to speak up at the meeting.

The isolated(A) tropical island offered tourists clean(B) white(C) sandy beaches, a peaceful atmosphere, and water sports galore.