— May I remind you that a Mr. Smith is waiting outside, sir? — Oh, that’s right. I ______ about it.
16. I ________ an invitation from one of my friends, but I have no idea ________ it or not.
15. He ________ his doctor’s care ________ he is quite well again.
14. Yesterday we went to a park ________ is newly built, ________ we had a very good time.
13. –Just now I called home but nobody answered. --Oh, sorry. I ________.
12. Mr Black has two sons, ________ are fond of collecting stamps.