20.You will__________sooner or later supposing that you work without play for long .

Did you see Lucy last night She musthave left home as she was wondering round the town at midnight .——The fact that she was wondering round thetown at midnightshe had left home for good .

Tom was so wild about computer games that he would stay online for ten hours _____every day.[ ]

In 1969, Neil Armstrong, an American astronaut, _____ the moon for the first time, which announced man began to march at the universe. [ ]

The old man feels very_________because all his children have gone abroad and his wife _________ foralmost two years.