问题
                    
Thanks ______your letters.[ ]
                            A: for
B: in
C: at
D:with
                        
                        B: in
C: at
D:with
正确答案是:
                        
                        
                        
                    同类题型
                    Hello, this is Lily speaking. Could I speak to Mr. Black?— Sorry. He ______ the Xuanwu Lake Park.
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______ Saturday morning, I cleaned my room. ______ the afternoon I did some reading.[ ]
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