We felt ______ impossible to finish the work without help.

Why don’t we take a taxi to the Olympic Sports Center in Hexi? —I can’t ____ it. Let’s take the bus instead.

Look! There are two monkeys _____ the tree. —Oh, yes. They are eating the fruit.[ ]

Can you ______me ________3894563?

Have you finished reading the book ________? —-Yes. I have ________finished reading it．