My father came back home ______I was cooking in the kitchen.
—Don’t have your mobile phone on when you are in the library.— __________.
Nobody knew who was the first ________ at school that morning when the window was broken.
—May I have your name? — _______.
Great changes have taken place around the world. Nobody can tell _____ in 20 years.
— Shall we go for a hiking this weekend?— All right, ________ it rains.