Exercise 1:give the correct forms of the verbs in the blankets.question 1:when i______(see) you tomorrow, i______(tell) you my news.question 2:by the end of the month the estate agent______(sell) twenty houses.question 3:when i______(wait) for the bus, i saw my close friend.question 4:______she______(study) english since she______(be) four years old.question 5:______we______(study) while they are going out.question 6:as soon as we______(get) there, we______(phone) for a taxi.question 7:______he______(see) 10 mice when he______(come) into the room.question 8:we went home when we______(finish) our work.question 9:when i was going to the door, the phone______(ring).question 10:i will go to the library before i______(do) the shopping.question 11:at this time last night, i______(learn) while my father______(watch) tvquestion 12:he______(watch) tv when i come to see him.question 13:he______(live) in new york for 4 years before he______(move)to new york.question 14:we______(send) a report as soon as we______(finish) our work.question 15:we______(wait) here until the rain______(stop).question 16:he will go home as soon as he______(finish) his work.question 17:at 11:30 tomorrow, we______(have) lunch in our friend’s house.question 18:his health has improved since he______(return) from the hills.question 19:the chinese______(make) spaghetti dishes for a long time beforemarco polo______(bring) it back to italy.question 20:it is the first time he______(drive) a car.question 21:i understand you ______(have) an unpleasant experience at theweekend. what exactly______(happen)?question 22:"good night. it______(be) nice to meet you," he______(say) and______(go) off to his car.question 23:i will graduate in june. i will see you in july. by the time i______(see)you, i______(graduate).question 24:we______(already finish) that work by the time you get back.question 25:when i arrived at the meeting, the first speaker just______(finish)speaking and the audience were clapping.question 26:the traffic was very heavy. by thetime i______(get) to mary's party,everyone______(already arrive).question 27:"you______(find) the key which you______(lose) yesterday?" "yes.i______(find) it in the pocket of my other coat."question 28:tomorrow i'm going to leave for home. when i______(arrive) at theairport, mary______(wait) for me.question 29:sarah has lost passport again. it is the second time this______(happen).question 30:when the alarm rang, jack______(jump) out of bed quickly.question 31:it's no use getting impatient. the plane______(not arrive) until theweather______(clear) up.question 32:john and i______(study) at the same school and we______(be) greatfriends ever since.question 33:don't wait up for me. i can't tell when i______(be) back.