Unit 4 .For a Better Community

1. While we________ information for our presentation last month, we discovered that lots of people in our neighborhood needed help.

• A. were collecting

• B. are collecting  

• C. collect         

• D. collected

2. When we visited Mrs. Lan this morning, she ________her lunch.

• A. is preparing      

• B. was preparing     

• C. has prepared        

• D. prepares

3. She told us her life story while we________ her tidy the house.

• A. are helping   

• B. have helped      

• C. were helping   

• D. help

4. While we were cleaning her kitchen, we________ a knock at the door. It was another old lady who lived next door.

• A. are hearing     

• B. were hearing    

• C. hear   

• D. heard

5. We________ to help old people clean their houses while we were talking to them later that day.

• A. are deciding   

• B. were deciding   

• C. decided       

• D. decide

6. While we ________ at the food bank, we met an old friend.

• A. were helping  

• B. are helping

• C. help

• D. helped

7. An old lady came to us and asked for help while we________ at the bus stop.

• A. are waiting     

• B. have waited  

• C. were waiting  

• D. wait

8. When we came to the local orphanage, all the children there________ their dinner.

• A. are having      

• B. were having 

• C. have had        

• D. have

9. I ___ breakfast when the telephone rang.

• A. was having

• B. am having

• C.had having

• D. be having

10. While they were cleaning the streets, it ___ to rain

• A. Starting

• B. Was starting

• C. Started

• D. is starting