Everyone in our school is working hard and doing what we can _____ a good college.
The book ___ to me is very interesting.
Millie gave ________ a baby cat yesterday that hurt _________ when it fell from the tree.
In the playground I saw a boy ___ I thought was your brother.
--- Mr Wang, I have trouble _______ the text. ---- Remember ________ it three times at least.
---- Will you answer the telephone? It ________ be your mother. ---- Sorry, I _______. I’m very busy.