You say he works hard,_______, and _________.

I don’t think there will be many students left in the class，_______，because the conditions are not fit for studying.

It was not until he came back _____ he knew the police were looking for him.

Do you know the man from ________ house the pictures were stolen？

______ a pair of compasses, it is easy to describe a circle.

He pointed to ______ looked like a tomb and said, “Ghost.”

---Is Mary still performing?
----I’m afraid not. She is said_____ the stage already.

---Where did you get to know her?
----It was on the farm______ we worked.

I feel uncomfortable each time I remember the situation _____ Mary didn’t agree with me _____ the matter.

Through so much trouble，he learned ________ everyone needed friendship and ________self confidence is important.