A.Provided he were an expert on computer technology, he would invest in some computer companies.
B.He wishes he was investing in some computer companies now.
C.Had he been an expert on computer technology, he would invest in some computer companies now.
D.If he had been an expert on computer technology, he would have invested in some computer companies.

A.Had it not been for TV news programs, people wouldn’t have been better informed.
B.Never have people been so well informed as they are now, thanks to TV news programs.
C.Not until people had been well informed was TV news programs more informative.
D.No sooner had TV news programs been informative than people were better informed.

A.Positive changes in American schools
B.Valuable academic learning experiences
C.Field trips for schoolchildren
D.New trends in educational development

A.Positive changes in American schools
B.Valuable academic learning experiences
C.Field trips for schoolchildren
D.New trends in educational development

A.enjoy their time at school
B.practice some outdoor activities
C.learn to value the arts and culture
D.develop economically useful skills only

A.field trips
B.the schools
C.school groups
D.school administrators

A.difficult and important
B.expensive but not essential
C.new and common
D.cheap but comfortable

A.Tony promised to support Sophie in the upcoming debate.
B.Tony urged Sophie to support him in the upcoming debate.
C.Tony advised Sophie to support him in the upcoming debate.
D.Tony apologized for supporting Sophie in the upcoming debate.

A.You mustn’t wash your hands carefully before meals.
B.You should wash your hands carefully before meals.
C.You needn’t wash your hands carefully before meals.
D.You might wash your hands carefully before meals.

A.where
B.when
C.which
D.why