Questions about grammar 1. Mike is among those who _____ from the fire unhurt. a) had escaped (my answer) b) have escaped (correct answer) - Isn't that I'm implying the fire still ongoing if I use present perfect in this sentence? - When to use present perfect & past perfect? 2. _____ our homework, we went out to have a game of football. a) Having completed (correct answer) b) Completed (my answer) -When to use -ing? Can't I just use the word 'completed'? 3. Ted seems ______ what was happening before we did. a) to know (my answer) b) to have known (correct answer) - Why 'have+past participle' is needed in this sentences?