Travelling by plane is _____ expensive.      

Search engines (搜索引擎) help us find information _____.  

The teacher always asks us not to work _____.  

Shall we turn _____? The rain is getting heavier.  

填空。
           (luckily), he didn't pass the exam.

用所給單詞的適當(dāng)形式填空。
1. The plane landed _____ (safe) at last.  
2. Can you tell me where there is a good place _____  ( play)?  
3. They want to visit Guilin because it's a _____ (fascinate) place.    
4. She found it _____ (interest) to hang out at the mall.    
5. I don't know what _____ (do) next.

My grandfather looks _______ at me. He looks _______ at the moment.