Constant correction by a teacher is often counterproductive, as the student may become afraid to speak at all.
A.desolate
B.unproductive
C.barren
D.effective

A.documentary
B.population
C.maximum
D.stimulate

______ (22)
A.with
B.at
C.for
D.on

______ (23)
A.adequately
B.absolutely
C.highly
D.mainly

______ (24)
A.state
B.condition
C.condition
D.situation

______ (25)
A.paying
B.pay
C.paid
D.to pay

______ (27)
A.charge
B.money
C.allowances
D.fees

______ (29)
A.compose
B.consist
C.include
D.belong

______ (30)
A.generous
B.large
C.considerate
D.considerable

A.tremendous
B.amateurish
C.prohibitive
D.coincidence