Why are you so frustrated, Ben? —I was late for class again. I’m afraid Miss Li will be _________ me.

I think ____ of the materials I listened to at the beginning of the exam ____ easy.

It took us over an hour to walk ____ this street. [ ]

This morning our head teacher came to school _________ than ________ student in our class.

When did you start to collect stamps?— I got my ______ stamp when I was ______ years old.