---Where are their keys?---They are .
---Why do you like cats? --- __________ they’re interesting.
---What do you do after school?---I practice_________ the guitar.
It takes ___ thirty minutes to get to school by bike.
He always goes to work on time. He is _______ late.
---Can you join us for dinner tonight ?--- Sorry, I’m afraid not. I _______ look after my sister.