根据句意及汉语提示填空。
【小题1】Jim often _______ (做鬼脸) in class. His teacher is angry with him.
【小题2】I called you yesterday evening. _______ (没有人) answered.
【小题3】I’m not sure _______ (是否) he will come or not tomorrow.
【小题4】He is very funny and often makes us _______ (笑).
【小题5】We sleep _______(至少) 8 hours every day.