There he pointed to _____ looked like a stone and said that’s ______ you had to carry home.
I don't think ___ possible to master a foreign language without much memory work.
If you want to borrow a football after school, your student card ___ here.
You ___ me, but since you have,I’ll keep it secret from others.
If you have something important to do, you ___ waste any time.
---Where is my reference book? It was here a moment ago.---Someone ___ it by mistake.