What ________ subjects do you like?

you see the film Journey to the West yesterday?—Yes. But the film for 5 minutes by the time I got there.

Do you like vegetables?—Yes, I do. I like _____.

What ________ useful book ! —Yes, it is. But I found___________ difficult for me to read.

How long did you stay at the party?— I only stayed there for ________ hour.