When the invader arrived, millions of people ___ from their homeland.
-----She looks very happy. She have passed the exam.------I guess so. It’s not difficult after all.
----Did Peter fix the computer himself?-----He , because he does know much about computers.
. your rotten idea, we went the long way .
year after year , tigers are becoming fewer and fewer .
It was the training _____ he had as a young man _____ made him such a good engineer.