I think the book is as interesting as it is instructive．—— It could never be____．It is well worth reading．

how is your new roommate — She really ____. She always making loudnoises at midnight and when I remind her , she always makes rude remarks.

How long can you ________ your breath underwater

The twins are ________ from each other. Tell me the ________ between them.

Hi, Mary. __________—Not so well. I can’t keep up with the other students.