Viết lại câu: They bought all the vegetables on the shelf => These days, you can buy bottled water at the chemist's. => Where can we meet such good people these days? => Will they give us free drinks at the meeting? =>

They bought all the vegetables on the shelf

=> all the vegetables on the shelf were bought by them

These days, you can buy bottled water at the chemist's.

=> these days, bottled water can be bought at the chemist's 

Where can we meet such good people these days?

=> where can such good people be met these day?

Will they give us free drinks at the meeting?

=> will free drinks be given to us at the meeting