一、单选题（本大题共10小题，共10.0分）
1. Though natural resources, the area was well developed.（ ）
A. lacking for B. lacking C. lacked in D. lacked of
2. His idea was in advance the time.（ ）
A. for B. ahead C. of D. before
3. I have a（n） to make to you--I opened your letter by mistake.（ ）
A. apology B. disadvantage C. fault D. shortcoming
4. When asked about their opinion about the schoolmaster，many teachers would prefer to see him step aside younger men．（ ）
A. in terms of B. in need of C. in favor of D. in praise of
5. As it turned out to be a small house party，we ____ so formally．（ ）
A. should have dressed up B. can't have dressed up
C. must have dressed up D. needn't have dressed up
