-This problem is very difficult. -I know
题型:选择题
问题:
-This problem is very difficult. -I know,but Jack has working it out.
A.succeed in
B.succeeds in
C.succeeding in
D.succeeded in
-This problem is very difficult. -I know,but Jack has working it out.
A.succeed in
B.succeeds in
C.succeeding in
D.succeeded in