Complete the sentences below with an appropriate preposition. 101. The prince of electricity is going up ............. August. 102. They came to visit us ............. on my birthday. 103. Did you have a good time .......... Christmas? 104. The children are really excited ........... their summer vacation. 105. We were very disappointed ........... the organization of the festival. 106. John missed a lot of lesson. He was ill............... January to March. 107. Helen had said goodbye to everybody in the class ............ she left for her hometown. 108. My cat is very found .................fish. 109. I waited ..........10 o’clock and then went home. 110. I can’t remember exactly when the accident happened. I think it was ............. nine and half past nine. 111. Are you acquainted......... the lady? 112. .......... the children left, the house was very quiet.