找英语高手答卷，在线等，急！！！

第1题:(.5分)
Tom is going to travel ________ the world on foot.
可供选择答案:
1.over
2.across
3.around
4.through
第2题:(.5分)
I like football, because it is very __________.
可供选择答案:
1.excitement
2.exciting
3.excited
4.excite
第3题:(.5分)
He is always losing keys. He is a ________ person.
可供选择答案:
1.carefree
2.careful
3.careless
4.caring
第4题:(.5分)
A satellite is a kind of machine that can fly in ___________.
可供选择答案:
1.an space
2.space
3.the space
4.a space
第5题:(.5分)
The students __________ four hours doing reading assignments.
可供选择答案:
1.spent
2.cost
3.took
4.finished
第6题:(.5分)
I''ll phone you as soon as I__________ the news.
可供选择答案:
1.am getting
2.get
3.will get
4.shall get
第7题:(.5分)
Next year, the winter term ______________ on 28 th March.
可供选择答案:
1.is finishing