一、根据句意用方框中所给单词的适当形式填空。
note succeed communicate proper grandson
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1 Jack’s computer isn’t working__________.
2 The old man over there has three __________.
3 Liu Ming has _________ in winning first prize in the singing competition.
4 You’d better take some _________ when listening to the class.
5 Julie and I keep ___________ by chatting on the Internet.