---_____ of them knows Japanese, so I have to ask a third person for help.---You’d better ask Tom for help. He is good at Japanese.

We must try ______ best to make our city more beautiful.

— __________ is the cost of the trip?— Ten dollars per person.

I forget to bring a pen. Would you lend me        ?

The boy used to cause a lot of _________/’tr?bl / very much.