用have,has,already,yet,ever,never,since或for填空,使句子完整、通顺

用have,has,already,yet,ever,never,since或for填空,使句子完整、通顺
1.I have lived in Shenzhen _______ I was born.
2.Have you packed your bag _____________?We are going to set off.
3.I have ______ finished my homework,so I can chat with my friends on the Internet.
4.Tom has been a soldier _______ three years ago.
5.The Greens ___________ visited the Window of the World twice.
6.The boy has stayed here _________ sixty days.
7.—Where is Nancy?
—She ________ gone to England to visit her grandparents.
8.He hasn't finished the work _______.He still needs an hour.
9.—Have you ________ visited the Great Wall?
—No,I've _____ visited it.I hope to go there one day.
10.—How long ________ they worked in Shenzhen?
—_______ five years.