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用所给单词正确形式填空 We are ____ a barbecue.(have)People must stop ____the sea.(pollute)

题目详情
用所给单词正确形式填空 We are ____ a barbecue.(have)
People must stop ____the sea.(pollute)
▼优质解答
答案和解析
having
现在进行时的结构;be doing sth