... for us, ? 6- One of the cars is yours, ? 7- Neither of the houses are rich, ? 8- Nobody is here, ? 9- He and you did this work, ? 1 0- You and I will co-operate to finish it, ? 1 1- You think ... 1 7- Nothing is valuable for her, ? 1 8- One of the people lost the way, ? 1 9- There are only 28 daysin February , ?2 0- You won't be leaving for another hour, ? 2 1- Jill and John have ... ? 2 2- She has an exams tomorrow, ? 23-You are going to school tomorrow, ? 3 4- There is an exams tomorrow, ? 3 5- He should stay in bed, ? 3 6- You can't play tennis today, ? 3 7- We've...