时态教学案例①Gary the bathroom every day. A.clean B.cleans C.is cleaning D.cleaned②Martin often a meal for his friends after work.A.prepare B.prepares C.is preparing D.prepared③I sometimes late to finish my work.A.stay up B.stays up C.am staying up D.stayed up④It always a long time to get there by sea.A.take B.takes C.is taking D.took⑤He seldom very much about his son.A.worry B.worries C.is worrying D.worried
