We should respect teachers because they ________ us with knowledge.
---Is this schoolbag yours? ---No. Mine is ________this one.
______ good time they had at the party last night!
I like ______ best. They look very tall for they have long legs and a long thin neck.
He is_______ usual man but last week he did _______unusual thing——saving a boy out of water.
Cindy is always helpul. She only thinks of others and does not_____herself.