She sat at her desk，with her eyes ________ on the book，________ in its plot.

y have one of these; in otherwords, you have ______ you choose.

It’s such a good place ______ everyone wants to go and visit _______ it is well-known all over the world.

Could you please clean the room— _____ I have to do my homework.

32．—You are so strong．—Yes，I often________in the gym．