问题
                    
Elephants walk on_______. [ ]
                            A: the tiptoe 
B: a tiptoe
C: tiptoes
D:tiptoe
                        
                        B: a tiptoe
C: tiptoes
D:tiptoe
正确答案是:
                        
                        
                        
                    同类题型
                    There is a wire pole along the road _________ meter.
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Eating________vegetables and less meat can help you to keep in good ________
Nowadays of business letters are written in English.?
I have a lot of vegetables,________ carrots,potatoes,and so on.[ ]