【题目】用am, is, are填空。
It 1__________ playing now. Daming and Sam 2 __________ playing hide-and-seek. Sam 3__________ hiding and Daming 4__________ seeking. Lingling and Maomao 5__________ playing clapping games. No one is playing with me. I 6 __________ sad.
【答案】1.is 2.are 3.is 4.is 5.are 6.am
【解析】
略
