1.(I've started/I started school) when I was four2.We can go outnow.Look! The rain (stoppped/has stopped)3.An Englishman (invented/has invented) the World Wide Web in 19914.They aren't ready. They (didn't finish/haven't finishe...

1.(I've started/I started school) when I was four 2.We can go outnow.Look! The rain (stoppped/has stopped) 3.An Englishman (invented/has invented) the World Wide Web in 1991 4.They aren't ready. They (didn't finish/haven't finished) their breakfast 5.Where's my bike? Someone (took/has taken)it! 6.What's the matter? (Have you lost/ Did you lose) something? 7.(I bought/I've bought) a tracksuit at the market last Saturday. 8.(I've done/I did) my homework. (I've done/ I did) it before dinner