More than two _______ years ago, people knew little about the universe.
[     ]
A. thousands
B. thousand
C. thousand of
D. thousands of
用合适的词填空。
1 ________ + three = nine  
2 four - ________ = two
3 eight + one = _________
4 six - ______ = seven
5 six + _______= seven    
6 four + four = _______
7 one + ______ = one    
8 five + one = ________
9 _______ - three = four  
10 two + _______ = six
用所给词的适当形式填空 。
1. Tom has _______(12) color pens.
2. Tom's birthday is August ________(12).
3. Is March the _______(3) month of a year?
4. There are ________(90) students in her class.
5. The new skirt are ________(100) yuan.
根据句意及首字母提示补全单词。
1. There are usually(通常)t_________ days in February.
2. - When is your b_______, Tina?  
    - It is July 5th.
3. John is fifteen y________ old.
4. We have an Art F__________ each year.
5. H_______ old is your father?
6. O_________ 1st is our National Day(国庆节).
7. - How much is it?   -- It is 20 d_________.
8. The birthday p_________ is October tenth.
9. The sixth month of a year is J___________.
10. The last month of a year is D___________.
Bill is ________.
[     ]

A. eighteen years old  
B. eighteen year old  
C. eighteenth years old  
D. eighteenth years old

用所给词的适当形式填空 。
1. There are ________(31) days in July.
2. "How old is the girl?" "She's ________(9) years old.
3. Her birthday is August _______(9).
4. Monday is the _________(2) day of a week.
5. "How much is the jacket?" "It's _________(90) yuan.
It’s said that _____ people flew to Paris during the Easter weekend.       
[     ]
A. thousand of                  
B. thousands of  
C. two thousands                
D. two thousand of
There are about _____ people in Hainan now.      
[     ]
A. eight million                
B. eight millions    
C. eight million of              
D. eight millions of  
During the seven-day holiday, _____ families went sightseeing .      
[     ]
A. thousand  
B. thousands    
C. thousands and thousands  
D. thousands of
下列句中均有一处错误，请指出并改正。
1. Martin is a fifteen-years-old boy.
_______________
2. Jane's words made us to feel happy.
_______________
3. He doesn't seem being very happy.
_______________
4. When he was young, he often got into troubles with the police.
_______________
5. The doctor advised my father to give up to smoke.
_______________
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