–Do you know the man under the tree? --Sorry, I don’t know _______.
Do you like the movie? Yes. It’s one of ___________ films I have ever seen.
My cousin is a helpful girl, she often ________ others.
The goldfish move very _____ and sleep ______.
He isn’t that hard-working. So he has problems _______ English.
Look at the library. It's our classroom.