1.7 He thinks he＇d better___art since his intellect is not good for science.

1.13 She could hardly（ ）laughing. x

1.12 Opportunities are always available（ ）one uses his mind.

1.11 （ ）can theory be separated from practice.

1.10 I expect her to（ ）her obligation.

1.9 All his evenings were（ ）with study.

1.8 （ ）your letter,I am pleased to in form you that your plans are quite acceptable to us.

1.7 （ ）it is a good thing I did not get that post I applied for, though I must admit that I was disappointed at the time.

1.6 The only thing（ ）really bothers us is whether we will have access to the resources room of the department.

1.5 -Why can＇t you and Bill go to the movies tonight?-We are（ ）a history test tomorrow.

1.4 Water encourages the（ ）of iron and oxygen to form rust.