_____sustainable development, measures are being drafted to control rising prices.[ ]

The poet and ______ pianist is going to give us a talk this afternoon.

Would you like to climb mountains with me this Sunday—I’d love to. But I _______ play table tennis against Class Three.

There are no relative articleson the InternetWhat shall we do—My God！Thereare always not any useful articles when you want

He must be helping the old man to water the flowers, _____?[ ]