1.With the age of more than 50 years old, he keeps learning knowledges and adpating himself to the new environment.
2.The kettle is filled with boiling water.
3.He stood quite close to the wall.
4.The well is 15 meters in depth.
5.What on earth are you up to?
6.There can't be any peguin in the North Pole.
7.You must have been rather late going to bed last night.
8.He said he would never enter that room any more.