紧急求助英语题用括号中动词的适当形式填空"I________(e
用括号中动词的适当形式填空 "I ________(elain)this to you several times already."said the teacher."I hope you__________(understand)it now."Then he looked at a little boy at the back of the class."________you_______(listen),Jones?"he asked."Here is a simple problem:"Sal
"I have elained (explain)this to you several times already."said the teacher."I hope you understand (understand)it now."Then he looked at a little boy at the back of the class."Are you listening (listen) ,Jones?"he asked."Here is a simple problem:"Sally has worked(work)in an office for thirty-four weeks.In that time,she earns (earn)￡300 a week.How much has she earned (earn)so far?" "Please,sir,"Jones answered,"I can only answer your first question.I___wasn't listening___(not listen)."