She was the only student who got 100 on the test.
她是唯一一個考一百分的學生。
This is the only bus to my grandma's village.
這是唯一一班開到我外婆村子的公車。
He is the only one who knows the Wi-Fi password.
他是唯一知道 Wi-Fi 密碼的人。
The only problem is that we have no money.
唯一的問題是我們沒有錢。