Complete the sentences with the given words in their proper forms（用括号中所给单词的适当形式完成下列句子，每空格限填一词）
【小题1】To our great ________, our class won the basketball match. (surprising)
【小题2】I usually buy coffee for my sister and hot chocolate for_______. (me)
【小题3】My brother David is working in a Chinese restaurant as a_______.(wait)
【小题4】My dear classmates, let’s _______now to help protect the forest. (action)
【小题5】Every evening, we can see people dancing_______ here and there.(happy)
【小题6】Mum likes the black trousers, but I prefer the dark blue_______. (one)
【小题7】Shanghai is an_______ city that attracts many people from other countries. (nation)