A. habit
B. a habit
C. habits
D. some habits

A. 6 kilos
B. 6 kilo
C. 6 kilos of

A. famous actor
B. movie star
C. sports star
D. famous golfer

A. cups of tea      
B. cup of teas        
C. cups of teas          
D. cup of tea

A. the 1990s; his sixty
B. 1990's; his sixty
C. the 1990s; his sixties
D. the 1990's; sixty

1. What are your ______(lesson) today?    
2. When is your ______(China) lesson?
3. They ______(not do) their homework.  
4. Would you like ______(go)with me?
5. Sunday is the ______ (one) day in a week.
6. Lucy and Lily are ______(English).

1.You must not break the         (规定).
2.We can't make too much noise in the         (大厅走廊).
3.We have to wear         (运动鞋) for gym class.
4.It's not         (公平) that she’s allowed to go and I'm not.
5.He         (步行) two kilometres to work every morning.
6.She has to         (洗) the dishes after meals.

1. It was difficult  ________(build) the railroad for us.
2. What's ________ (he) name ?
3. Are those ________ (girl) your ________ (classmate) ?
4. He ________ (wave) to me and smiled .
5. The British ________ (bridge) are very nice .
6. We ________ (not,have) chicken but fish for lunch yesterday.
7.  —How long ________ it ________ (take) you to finish your homework last night?
     —Tow hours.
8. Yang Liwei is the ________ (one) astronaut of China.
9. These ________ (hero) are from Africa.
10. They ________ (build) the railroad five years ago.

A. tomatoes, salad   
B. tomato, salad
C. tomatoes. salads    
D. tomato, salad

1. The child taught himself English. (改为复数句)
     The ______ taught ______ English. 
2. It's an interesting story. (改为感叹句). 
     ______ ______ interesting story it is!
3. Peter saw a bird in the tree. ______ ______? (完成反意疑问句)
4. They have been swimming  for five hours. (就画线部分提问)    
    ______ ______ ______ they been swimming?
5. We have been living here for 10 years. (改为同义句)
    We have been living here ______ 10 years______ (watch) movies?