求英语好的帮忙答下这些填空题,15.I'm thinking about the lonely nights you s

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.