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          （2006北京崇文模擬）A dog ran in front of my mother's car and she ________ stop very quickly.

          1. A.
            ought to
          2. B.
            had better
          3. C.
            used to
          4. D.
            had to
          			
          


			
          

		
          
		
		
	
          
		
          
			
          
				
          
				D
          句意：一只狗突然竄到媽媽的車前，她不得不迅速停車。have to (used to show that you must do sth.)強調(diào)客觀需要，意為“必須，不得不”。				
          
							
          
			
          
			
          
			
			
          
		
          
	
          

		
          

		





			
          
		
          
		
				
          
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