he stayed in Germany for half a year and he will go to Germany again.A. Before long; befo

问题补充：

he stayed in Germany for half a year and he will go to Germany again.

A. Before long; before long

B. Long before; long before

C. Before long; long before

D. Long before; before long

答案：

A. Before long; before long

B. Long before; long before

C. Before long; long before

(答案→)D. Long before; before long

解析：考查词组：Before long;很久以前，before long不久后，句意：很久以前他呆在德国半年，他不久就会再次回到德国。选D。