1. We can see a big smile on Mary’s face whenever she     her son. 


2. The     reaction caused explosion which destroyed a building. 


3. This factory bought a labor-saving     to cut down the burden on its workers. 


4. He is such a     man that he never boasts about his achievements. 


5. The man needs emergency assistance. Do you know the     of the nearest hospital? 


6. People who are good at     skills tend to get along with others well and have prosperous careers. 


7. Joan’s terrific performance at work has     her superiors and she was promoted quickly. 


8. The little boy forgot     his key, so he couldn’t get into his house. 


9. He won’t betray you, and    . 


10. The study reveals that onions and gingers can     the occurrences of diseases. 


11. The weather bureau suggests that the cars     away from the river banks to avoid the flood. 


12. The high-quality organic fruits     to overseas countries since last year. 


13. I would rather stay at school for a while than     home in the rain. 


14. My grandparents told me that they     to work before the sun rose in their childhood. 


15. After studying hard for a whole month, I am     for the coming exam. 


16.     though the teacher felt, she was still trying to answer the students’ questions patiently. 


17. A: I’m thinking keeping a dog.
B: Well,    . Keeping a pet is not easy. 


18. A: I like John’s idea.
B: I like his idea, too.    . 


19. A: I have two tickets to the concert tomorrow. Would you like to go with me?
B:    , but I need to prepare for the coming exam tomorrow. 


20. A: Hello,    
B: No problem. When will you arrive and how many nights will you stay? 


21. A:     Here comes a scooter.
B: Oh, no! It almost hit me. 


22. A: I was not chosen to the school basketball team.
B:     There are still chances. 


23. A: Do you see the sign on the door? Does it mean only dogs can enter this coffee shop?
B:     Actually, it says that they welcome people with their pets to their shop. 


24. Client: May I speak to Mr. White?
Secretary:    
Client: Thanks. I’ll call him later. 


25. Hess: Excuse me. I’d like to try this on in a larger size.
Morgan: Certainly. I’ll get that for you right away.
Hess: Thank you.    
Morgan: No problem. I’ll take both for you to try on.