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

The number of people invited _____fifty, but a number of them _____absent. [ ]

Farmers in our village are ________ about their spring ploughing because of little rain for so long.[ ]

te the old town is the 5500 meters YulongXueshan Mountain, its peak_______ with snow

Do you like your teacher —____.