求英语好的帮忙答下这些填空题,

求英语好的帮忙答下这些填空题,
15.I'm thinking about the lonely nights you spent alone,(wonder) __________ where I was and how things were going.
16..She felt,(odd) _________,that they had been happier when they had no money.\x09
17 Traveling abroad isn’t (necessarily) ________expensive as long as you find hotels and restaurant of reasonable prices.\x0b
18 I feel really (guilty) ________ about not having written to you for so long.
\x0b19 These days we are so (accustomed) _________to using e-mail that we seldom use post offices.
20.The situation required that he (be) ___________present.
21.For a full (explain) ____________of how the machine works,turn to Page 5.
22.He always was a (n) _________ man.He never spoke to me nor anybody else,not even to pass the time of day.\x0b
23.Getting to the top hadn’t been easy,in spite of his burning __________ and will to succeed.\x0b
24 How did a company in trouble become a high-performing company with good _________ in just three years?
25Through such a study,the university can make a valuable (contribute) ___________ to the state's economic development.
26.For some reason,his (applicator) ___________ membership to the society has been refused.
27.Traveling abroad isn’t (necessarily) ________expensive as long as you find hotels and restaurant of reasonable prices.\x0b
28.I feel really (guilty) ________ about not having written to you for so long.

15 wondering
16 oddly
17 necessarily
18 guilty
19 accustomed
20 should be
21 expanation
22 miserable
23 ambition
24 management
25 contribution
26 application
27 necessarily
28 guilty