you beento the Great Wall—Perhaps notin my memory. ________, it might have been during my early childhood.

It takes more than knowledge andintelligence to ______ a good researcher．

Your brother is very cute.—Yes, ____ is. We all love ____.

My mother lives __________ because she hardly ever exercises.

you beento the Great Wall—Perhaps notin my memory ________, it might have been during my early childhood