I only know we will have a League meeting, but I have no idea when _________ it．

Isn’t that Ann’s husband over there? —No, it _______be him. I’m sure he doesn’t wear glasses.

Water is the cheapest drink. And it is also ______.

______ the two buildings there lies a swimming pool in which a lot of people areswimming. You can find Peter ______ them.[ ]

Which is ______ to learn, fishing or swimming?