ay find the key to the math problem onpage 107.—Ah, it’s so simple. I wonder why I _____ ofthat.

41“It” is often used to________a baby42

I had a discussion with MrBaker and hoped he _________ us an early reply

The book is boring. It is _________ the one I read last week.

What do you want ________those old boxes?—To put things in when I move to the new flat.