One way to understand thousands of new words in gain _____good knowledge of basic word formation.
His parents thought he was working very hard in the room, _____in fact, he was chatting with his friends on the Internet.
.The girl began to _____the piano when she was young.
.The house rent is expensive. I've got about half the space I had at home and I'm paying ______here.
.It is reported that two exhibition centres, ____are being built in my city, will open next year.
How about taking _____short break? I want to make _____ call.