1. Ms. Nicholson was hired because of her experience, skill, and .

   a. creation   b. creative    c. creativity  d. create

2. The new arrangement of machines on the factory floor  a number of 
   advantages over the old arrangement.

   a. is    b. takes    c. makes    d. has

3. There is a radio antenna  top of the Empire State Building
   in New York City.

   a. at  b. on  c. of   d. in

4. The incidence of computer crime has  in recent years.

   a. been grown  b. grow  c. growing  d. been growing

5. Welders use special masks to protect  faces.

   a. their    b. them    c. themselves    d. theirs
　

解答

1. Ms. Nicholson was hired because of her experience, skill, and (creativity).

   a. creation   b. creative    c. creativity  d. create

   because of her の後に、experience, skill と名詞 きている。次も
　 because of her にかかるので、名詞である事が分かる。
　 従って、c. の creativity　が正解です。

2. The new arrangement of machines on the factory floor (takes) a number of 
   advantages over the old arrangement.

   a. is    b. takes    c. makes    d. has

   take 〜 advantage 

3. There is a radio antenna (on) top of the Empire State Building
   in New York City.

   a. at  b. on  c. of   d. in

   Empire State Building の上に、ですから　on ですね。

4. The incidence of computer crime has (been growing) in recent years.

   a. been grown  b. grow  c. growing  d. been growing

   incidence : 事件
　
   has に続くのは、a. か　d. 
   a. では、has been grown となり、現在完了になる。
　 文の意味から「犯罪が増えてきている」なので進行形の d. が適切。

5. Welders use special masks to protect (their) faces.

   a. their    b. them    c. themselves    d. theirs

   welders : weld は溶接する、welders は溶接する人たち

　 所有格が必要ですね。　their faces.
  
   他はどれも当てはまりません。