How foolish I was!— ________ you have realized that，stop blaming yourself．

This is one of _____. Most of the students are _____ in it.

You are ________ to be nervous since this is your first time to give a speech in public.[ ]

So fast _____it is difficult for us to imagine its speed.

School kids take part in parades on campus on Halloween, ___________ in colorful costumes, after which there is a small party inside the classroom.