--What’s wrong with you , Eric ? You look tired .--I ______ to prepare for the final exam last night .

When you meet new words in reading, you needn’t         in a dictionary at once.

Could you please ________ this map on the wall?

— Jane looks really tired and sleepy.— I’m not surprised at all. She often　　　 too late and hasn’t enough sleep.

Thanks _______the Great Green Wall, the land produces more food.