f______ (not be successful in doing someting)

f______ (not be successful in doing someting) f______ (not be successful in doing something) f_ not be successful in doing sonething be successful in (doing) sth.be successful at (doing) sth. be successful in doing in可省吗 be successful in +doing 还是 to do? 急·have success in doing sth=be successful in doing sth= be successful in doing succeed in doing sth有区别吗? have success at与be successful in 与succeed in doing 的区别 be not worth doing he does not study hard and always f______ in exams. 改错：If carefully doing,the experiment will be successful.