They____the maths problem when I came in.

They____the maths problem when I came in. they___the maths problem when i came in When I came in ,I found _______. i _____cards when the teacher came in . when we were having maths class,the door opened and in came when i was working on a maths problem ,a goodidea went___my came first in the Maths exam 同义 maths problem 关于when的用法1.When i came in,i ____(call) them up.2.When i came The dog_________(lie) on the floor when I came in The girl ____ (read) a book when i came in. I stopping playing games when my mother came in.