19.At that time they were poor,and they went （ ）a difficult time.A.in for B.along with C.do

They were swimming at that time.（改为否定句） They _____ swimming at that time. they were at work at that time?作一般疑问句 they ( )《write》some books for people at that time They were building a subway station at that time. They（ were playing football ）at that time.(对括号部分提问） ( ) were they ( ) at that time? 19.At that time they were poor,and they went （ ）a difficult time.A.in for B.along with C.do They ____ (arrive) at the airport on time so that they can catch the plane at that time 用法 at that time at what time at that time呢 They went to the ball yesterday , _____ they had a good time.A.where B.whichC.at that D.that 【初二英语】【句型】They were mending Englishi at that time.（改为否定句）并说明理由!请回答者说明理由!They were mending English at that time.（改为否定句）They_____ _____ _____English at that time. the boy said they _____ (watch)news at that time怎么填? They were drawing a picture at that time（修改成否定句） They were talking to some police o____ in the park at that time They were listening to a program at that time.改为被动语态 They were repairing the car at that time改为被动语态. They were listening to a progarm at that time. 改为被动语态