I'm 13 years old and my sister is 15 years old. So my sister is
My father ___________________________ when he was in his twenties.
It is dangerous ____ you ______ a close look at the tiger in the zoo.
Take the paper with you. The details we ought to pay attention to ________ on it already.
This problem worried her so much that she didn’t know ___________ with it..
It _______ ten years since my sister ______ an English teacher.