It’s e______ important to know your audience so you can create the right message for the right people.
No one could rhim, but someone had to succeed (接替)him.
The businesses were large enough to be ready to __________(出口) their goods.
Air, food and water are necessary to slife.
Scientists have made a (突破)in their treatment of that disease.
This is the opainting, and the others are copies.