-- Have you been to the Great Wall?-- Perhaps not in my memory. _______, it might have been during my early childhood.
-----I’d like a wake-up call at 7:a.m.,please!----- OK, _____.
I won’t tell the student the answer to the math problem until he on it for more than an hour.
The issue of protecting cultural heritage was of _______ importance _______ we could not afford to ignore it.
— I promise Shirley get a new iPad on her birthday.— Will it be a big surprise to her?
— Did Vicky come back early last night?— Yes. It was not yet nine o’clock she arrived home.