用所给动词的适当形式填空。 1. It______(be) my birthday next Sunday. 2. They'll have a trip to the Great Wall if it ______(not rain) tomorrow. 3. Would you mind ______(help) me with my Chinese? 4. When I woke up, my parents ______(go) out. 5. Remember ______(not fight) with each other from now on.