When I traveled in Thailand, I bought a ring. It __________ silver.
Jack ____ the bus and read newspapers in the seat quietly.
It’s hard-working ____ him to spend three hours ____ the library on Sunday.
I don’t agree with him on this point ____ he might be right.
Oxfam Trailwalker is for helping ____ poor in Hong Kong and ____other parts of Asia and Africa.
---Hi, John. What are you going to do this Sunday?--- . Do you have any ideas?