The Australian boy has a good ________ of Chinese and can express himself freely in it.
None of us expected that the chairman ______ at the party. We thought he was still in hospital.
Those Chinese visitors were shown around the church yesterday, ______ roof was rebuiltafter the war.
John didn’t come along, ______ making it necessary for us to get someone else to replace him.
The British team, ______ several attempts to climb Yulong Xueshan, decided to have another try this summer.
David asked his nephew to ______ his bag while he headed for a drink at the airport.