请读懂下列句子,用下列方框中所给短语的正确形式填空。
instead of surfing the Internet even in summer holidays. 小题2:I like to _________________ my high-school days, which are the happiest in my life. 小题3:We should cut our expense ___________________. 小题4:What's the matter with you? You_____________________ be happy. 小题5:He ______________________ every opportunity he could get and was successful. |