找准主语，填对谓语

1.Ten dollars ______(be) enough for him. 2.The United Stated ___ (be) a developed country. 3.The girl as well as the boys ___ (have) learned to drive. 4.Nobody but us ____ (know) the secret. 5.A number of students ____(like) reading in our school. 6.The number of smokers ____ (be) increasing. 7.What the teacher said is very important for us all. 8.To say ___(be) one thing, but to do ____(be) another. 9.The professor and writer ____(be) going to give us a lecture next week. 10.More than one student _____(have) bought this book.