1.After nearly a month of discussions, they finally decided to appoint George as the new top _____ of the company.

2.Finally, the space commission found that the idea of going to Mars under the present timetable prescribed was not ______.

3.The successful ______ of the project was due to the team's meticulous planning and attention to detail.

4.To avoid unnecessary arguments, the young parents always dress their twins in ______ clothes.

5.The countries responded ______to the threat of terrorism and adopted a common counter-terrorism strategy.

6.Doctors have increasingly tried to use these biomarkers（生物标记物）to ______people who are at high risk of developing diabetes.

30.Generally speaking, the facilities and resources of tourist attractions in the high season are often _____ while in the low season there will be a surplus.

31.A week after the earthquake, the country is still struggling to feed and house the victims _____,asking for help from the international community.

32.Unless reform also ensures income ______ for the clderly, the budget reductions are unlikely to be politically sustainable.

26.Despite the changing circumstances, his dedication to his work remains ______.

27.After a meal he ______ cleaned out his mouth because he had a toothache due to his poor oral hygiene.

28 Since false eyelashes come in _____ lengths and shades, it's so easy to match them up with the customer's own and thus they have become popular among young ladies.

29.The school actively supports the local community and encourages volunteerism among students through a(n) _____ of activities.

17.He was pleasantly surprised when students could _____ with him in simpleEnglish.

18._____, while consuming dark chocolate is commonly believed to be detrimental to one's health, a recent study found that it can actually improve cardiovascular health.

19.Kathy, principally occupied in playing with her bracelets and rings, joined now and then in her brother's _____with Bennet.

23.It seemed _____ that people wouldstill want to play football during a war and the tickets for each match were sold out soon.

24.After declaring bankruptcy, poor Jack finally reached an agreement with his _____ who were demanding to be paid extra for the late payments.

25.The terrible scandal has damaged the _____ of the president as a leader,so he has to work hard to restore it.

20.In fact, important Sports events like the Olympic Games and soccer's World Cup may leave a(n) _____ impact on local infrastructure（基础设施）.