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

A.therefore
B.besides
C.moreover
D.however

A.off
B.heater
C.has left
D.for

A.off
B.heater
C.has left
D.for

A.Using
B.to
C.his
D.on

A.Excavations
B.have revealed
C.laying
D.reconstructions