. –Mary, is this ______ umbrella?–No, it’s not mine. It is _______.

I will send you an e-mail as soon as I ______ in Canada.

London is the south of England and it’s the River Thames. [ ]

There are _____________ people in the supermarket. It’s so crowded.

Our Maths teacher always makes his class _____ . And we’re never tired of his class.