To begin with, we learn how to______ our body when skating.
| A．balance | B．keep | C．hold | D．get |
He was ______ about his ______ son, who is always skipping classes.
| A．worried, worried | B．worrying, worried | C．worried, worrying | D．worrying, worrying |
Julie was good at German, French and Russian, all of ______ she spoke fluently.
| A．them | B．whom | C．which | D．that |
We narrowly escaped _____in the forest of South America 15 years ago.
| A．killing | B．to be killed | C．to have been killed | D．being killed |
Mr. Smith spoke slowly and clearly to _____ all of us students could follow him.
| A．test | B．be sure | C．examine | D．make sure |
Nancy enjoyed herself so much ______ she visited her friends in Sydney last year.
| A．that | B．which | C．when | D．where |