If you live in the country or have ever visited there, ____ are that you have heard birds singing to welcome the new day.

_____________ your sister have a computer—Sorry, I don’t think she has ______________.

_____ we have finished the course, we shall start doing more revision work

－Is there any possibility ______ you could pick me up at the airport?－No problem.

It may rain — you’d better take an umbrella _______