sses, you’d better understand as muchas possible while ______ notes.

Scientists have created the world’s smallest “snowma”, _______ about a fifth of the width of a human hair.[ ]

Do you know our home town at all? — No, this is the first time I _____ here

work with a strong will, we can overcome anydifficulty, _____great it is.

He knew nothing about the matter, but he talked as if he __it.