答案:B
A. discovered
B. allowed
C. shared
D. mentioned
A. receives
B. produces
C. sends
D. earns
A. put up
B. went up
C. got up
D. jumped up
A. difficult
B. expensive
C. beautiful
D. familiar
A. That
B. What
C. Whom
D. Who
A. enters
B. has entered
C. was entering
D. entered