—Do you like doing sports , Joe?—Of course. We can’t keep healthy_____ taking enough exercise.
---Is there ___________ left in the fridge? ---Only some eggs.
---Is English more important than Maths? ---No, I don’t think so. English is _____________ Maths.
When he walks_______ my desk,he knocked my books________ the desk.
Everything is OK. We are ready _______ work.
The trip from Kitty’s school to the park _________ about one hour by taxi.