问题
                    
Children’s Day is _________ June 1st. [ ]
                            A: in 
B: on
C:hildren's
D:for
                        
                        B: on
C:hildren's
D:for
正确答案是:
                        
                        
                        
                    同类题型
                    I don’t mind ____________ I can win or not , but I will try my best .
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It’s getting cooler. My mother opened the drawer to ________the clothes for summer.
We can have ___ bluer sky if we create ___ less polluted world.