问题
                    
I think your mother is_____you at the school gate at the moment.
                            A:waiting
B:waiting for
C:waiting for
D:is waiting
                        
                        B:waiting for
C:waiting for
D:is waiting
正确答案是:
                        
                        
                        
                    同类题型
                    Hello! ______ Lisa speaking. Is that Linda speaking?—-Sorry, she is not at home.
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