Ⅰ.单句语法填空

1．(2015·新课标全国Ⅱ，阅读A)I let a salesclerk fool me ________ buying a discontinued model.

2．At school，some students are active ________ some are shy，yet they can be good friends with one another.

3．(2013·山东，阅读A)Upon ________ (arrive)，Jimmy found a long line of applicants waiting to be interviewed.

4．Michael put up a picture of Yao Ming beside the bed to keep himself ________ (remind)of his own dreams.

5．(2014·福建，26)Could you tell me the trick of ________ (make)such tasty cakes?