----Helen, do you know if Martin _______ to my party next week?----I think he will come if he _______ free.
Bears live in cold countries, ______ they sometimes live in hot countries, too.
----Are you getting ready for Spring Festival? ----_______________. We are busy doing it these days.
----Hello! What are you doing now? ----We ____________ the school trip.
— I want to go to Hawaii with my father during the winter holidays. —
— did you stay in Hong Kong? — About 20 days.