The formula i+1 put forward by Krashen mea
问题:
The formula i+1 put forward by Krashen means input that contains structures ______ the learner's present level.
A. greatly above
B. greatly below
C. somewhat above
D. somewhat below
The formula i+1 put forward by Krashen means input that contains structures ______ the learner's present level.
A. greatly above
B. greatly below
C. somewhat above
D. somewhat below