No one knows exactly when our ancestors started talking,but new evidence suggests _______might have happened a long time ago.
On seeing the wonderful sculpture,everyone present a cry of surprise.
Mother went shopping; __________, I cleaned the house.
Ted will surely finish the job on time he's left to do it in his own way.
The new tax would force companies to energy-saving measures.
Tom has no sense of life so he often makes stupid mistakes, making others laugh.