Oh, you have made the same mistakes again. —　　　 . I’ll be careful in future

What’s your speech _______, Dr. Smith?—Tomorrow you will get it. [ ]

I called you yesterday evening, but nobody answered the phone. –Oh, I ___ a walk with my parents at that time.

This hat is too ________ / bIg/. Do you have a small one?

I didn’t know you were friends with Mr. Smith. — We ______ each other for6 years.