Ex1:In each of the following sentences ,put the verb in brackets in to the correct form 1: Two weeks (go)......................fast when you are on vacation 2: Many of the girls in my school (wear).................white shirts 3:Three kilos of potatoes (make).............the basket heavier 4:Some of the tables in the classroom (be) ......................broken 5:Bacteria o the harmful kind (cause)......................diseases 6:What we need most (be).....................books 7:The English (be)......................proud and independent people 8:The United States (have).....................a population of 250 million 9:There (be/not)......................................any letters for you yesterday 10:Everyone in both cars (be)......................injured in the accident last night