―Why? Where is the key to the sound lab?―Dear me! You _______ it in the taxi!
______around the university, we then were taken to a building, ______ many scientists worked.
It’s a pity that you ______ leave so soon. Your uncle will be home in 10 minutes and he misses you so much.
Don’t be afraid of difficulties. They can help you______ experience, and experience can, in return, broaden your horizons.
The research report published last month is very important______ it confirms the link between aggression and alcohol.
China now aims to boost domestic demand, and this ______ would help the global economy.