My classmate regretted ______ me that they had regretted _____ paying a visit to the car show yesterday.
1.—When can we come to visit you? —Anytime you feel like .
2. ______was known to them all that William had broken his promise______ he would give each of them a gift.
3. —How long are you staying there? — _____depends.
4. I hate _______ when young people speak to the elderly in a rude way.
5.Is ____ necessary to complete the design before National Day?