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He came into the his bedroom and ___ his backpack on his desk
用 put 还是 putting,为什么?
人气:276 ℃ 时间:2019-12-09 06:26:39
解答
put ( and 连接的两个动词时态要一致)��Ҳ��Ϊ�����ѡ�� ������ʦд�Ĵ��� putting ��ѧ��û�ҵ���ʦҲ��û�ʳ��һ����Dz�����ʦд���ˡ��������Ĵ
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