... like onions Constructions on the Sears Tower (begin) Until 1997, the Sears Tower (be) English pool of exercise Exercise on Simple Present Form positive sentences in Simple Present Anna / the window ... tree Angie before he went to see her in London? a horse before that day English Tenses – Graphic Comparison Problems with the English tenses? Have a look at the time line, it might help you understand ... Signal Words of Present Perfect already, ever, just, never, not yet, so far, till now, up to now Exercise on Present Perfect Simple Put the verbs into the correct form (present perfect simple)...