The Australian boy has a good ______of Chinese and can communicate with others freely.
Smith is poor. He has to manage on _________ $ 10 per week.
The new supermarket was once close to closing down. But since the underground was opened, business has been _______.
– Where did you find the wallet I lost yesterday? -- It was on the playground ______ we played basketball.
__________ in a new country, I was scared and feeling pretty anxious.
It’s standard practice for a company like this one______ a security officer.