on the off chance , just in case , on second thoughts , after reconsideration , on a whim, impulsively , on a budget , with a limited amount of money , on principle , due to belief , on one’s own , independently , on target , as planned , on duty , working , on purpose , intentionally , on condition that , only if .

exercise 3

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

)
恢復自動保存: ?