A.4:1
B.1:
C.2:1
D.:1
答案:C
--I'm having trouble _______ complete sentences.
-- You can ask the teacher ________ help. [ ]
A. to make; with
B. making; for
C. to get; with
D. getting; for
事故是造成死亡、职业病、伤害、财产损失或环境破坏的()。