题干
After he had broken the world record, Rod ____ to a restaurant to celebrate with hid friends.
A：went
B：had gone
C：would go
D：has gone
答案(点此获取答案解析）
A
A：went
B：had gone
C：would go
D：has gone
的展开式中所有系数的和为128，则展开式中
的系数是