_they are very tired ,they keep on working ----They are great .we must learn from themA Beacause;\B Beacause;soC Though;\D Though;but

来源：学生作业学帮网编辑：学帮网时间：2024/05/13 14:33:42

_____they are very tired ,____they keep on working ----They are great .we must learn from them
A Beacause;\
B Beacause;so
C Though;\
D Though;but

C
Beacause;so
Though;but
不能连用

_____they are very tired ,____they keep on working ----They are great .we must learn from themA Beacause;\B Beacause;soC Though;\D Though;but