问题

Many years of hard work_______ his great success in the development of this new type of material.

A:due to
B:thanks to
C:contributed to
D:looked into

正确答案是：

同类题型

I expect everything will turn out as youwish —–_______

Kevin was ______ late for school this morning. The bell rang right after he walked into the classroom.

Do you know where Mary is I can’t find her anywhere.—Well. She ______ go far, because her coat is still here.

_____ you at home last Friday —No, I _______.

______ the exams to worry about, I have to work really hard this weekend. [ ]