I think it’s impossible for us to work out the plan in just two days. It’s too difficult.—You’re right. We can’t be _______ careful and hard while working on it.

This is the first time went______ a film in the cinema together as a family

’t want to eat it unless he’s reallyhungry, in ______ case he’ll eat almost anything

Did you enjoy your holiday?—Yesit’s the best holiday Ithese years

______ twice, the postman refused to deliver our letters unless we chained our dog.