After the new technique was introduced, the factory produced （ ） tractors in 1988 as the year before.
（A）as twice many
（B）as many twice
（C）twice as many
（D）twice many as
He is （ ） join the army.
（A）too young to
（B）enough young to
（C）very young to
（D）young enough to
Of the two teachers the one in green is （ ）
（A）a more patient
（B）the most patient
（C）the more patient
（D）very patient
