1.you should tell your father exactly what happened. if i (be) ………. you, i (tell) ………. him the truth as soon as possible. 2.if i (have) ………. my camera with me yesterday, i (take) ………. a picture of alex standing on his head. 3.i’m almost ready to plant my garden. i have a lot of seeds. maybe i have more than i need. if i (have) ………. more seeds than i need, i (give) ………. some to my neighbor. 4.george has only two pairs of socks. if he (have) ………. more than two pairs of socks, he (not, have to) ……….wash his socks so often. 5.the cowboy pulled his gun to shoot at the rattlesnake, but he was too late. if he (be) ……….quicker to pull the trigger, the snake (not, bite) ……….him on the foot. it’s a good thing he was wearing heavy leather boots. 6.what (we, use) ……….to look at ourselves when we comb our hair if we (not, have) ……….mirrors? 7.it’s been a long drought. it hasn’t rained for over a month. if it (not, rain) ……….soon, a lot of crops (die) ……….. if the crops (die) ………., many people (go) ……….hungry this coming winter. 8.according to one scientific theory, an asteroid collided with the earth millions of years ago, causing great changes in the earth’s climate. some scientists believe that if this asteroid (not, collide) ……….with the earth, the dinosaurs (not, become) ……….extinct. can you imagine what the world (be) ……….like today if dinosaurs (still, exist) ……….? do you think it (be) ……….possible for dinosaurs and human beings to coexist on the same planet?