从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
1. ---How did the plan strike you?
---Great, indeed!_______. I can not speak too highly of it.
A. In fact B. Be sure C. After all D. As a result
2. ---Has your father come back from Africa?
--- Yes, but he ______ here for only three days before his company sent him to Japan.
A. was B. has been C. will be D. would be
