給下列句子中需要的地方加上逗號(hào)，如句中逗號(hào)是不必要的。請(qǐng)劃掉或換上合適的標(biāo)點(diǎn)符號(hào)。例句：Mary read the notice(，)and decided to ignore it.I.I saw table lamps and floor lamps at the home furnishings exhibition.2.By 2000 air pollution laws will be very strict.3.I heardMr.Lee closethe door butI did not hear him openit.4.We thought that we would receive the contract by July 31 and that we would complete the building by December 1.5.David wanted to finish the work before five o’clock but he could not do so because of the power failure.6.Beeause he has worked late every day this week he is determined to finish early on Friday.7.Mr.Scott selected either Friday July 10 or Friday July 17 for the sales meeting.8.She talked with Mrs.James Miss Evans and Mr.Bail before she made a decision.9.It is a dependable foolproof method.10.Yes I think I would like a new green car like that one.11.My cousin who graduated from the university last year has an exciting new job in Washington.12.Anyone who could pass that test deserves an A!13.I think that your answer is wrong.14.It was Jane’s father not her mother who visited her recently.15.The letter Was returned because it was addressed to Springfield Ohio instead of Springfield Illinois.16.We hope Mrs.Bell that you will continue to be one of our satisfied customers.17.The report that Mrs.Leslie submitted.has been lost.18.The beautiful，valuable，antique，ring was on display in the shop.19.Frank Stanley，HI，will replace his grandfather Frank Stanley Sr. as president of the company on June 1 1998.20.When I receive the statement I will pay for the shipment.21.We shall continue with the renovation of the house for we hope to offer it for sale within the next thirty days.22.The garden had been neglected for years and one could only imagine when it had last been tended.23.If I’m ever asked to choose a tree for fast growth and deep shade I’ll choose the evergreen elm.24.His cash crops included alfalfa barley wheat and rye.25.For their own use they raised chickens rabbits and ducks but they had no turkeys or geese.26.Because l had unaccountably lost my airplane ticket I had to purchase another before I could board the plane.27.When you enter the gallery you will see ahead of you at the end of the hall，Rembrandt’s portrait ofhis young son Titus.28.Jim Marshall was the first to stop at our house after the fire.29.We bought a large pillow for our dog Kahoota，she loves to lie on it in front of the fire.30.When I returned I discovered that Abigail our cat was eating the last of the hors d’oeuvres.