Jenny _____in the chicken when you called her at 5 o’clock this afternoon?

My brother is studying in ______ university in America; he wants to be ______ astronaut in the future.

Mum, my friends are waiting for me outside. May I go out to play with them?— Yes, you , but be careful, please.

Hawaii (夏威夷) is famous ______ its beautiful beaches (海滩). [ ]

Is this your e-book? —No, ________ is on the teacher’s desk.