---Why are you still here? It's so late.---Because I my work. Don't worry. It's almost done.
— When can I see you again? —___________ is fine with me. I’m free these days.
Don’t worry about him any more. He is old enough to think ___________.
—How long did you spend ______ this book? —About two hours.
The teacher will give us a talk on how _____ English well.
I have ___________ to tell you about my favourite film.