. Jack is good, kind, hard-working and intelligent. _____, I can't speak too highly of him.
His enthusiasm for the plan seems to have______; he never speaks about it any more.
After thirty years of separation, I _____ with my sister. How happy we were!
--- Have you seen the robber______? --- Why ask me? You are the only one who stands _____ to him.
Only when I left my parents for Italy _____ how much I loved them.
Some researchers believed that there is no doubt______ a cure for AIDS will be found.