--I don't think we have met before.--Yes, once at a party, but we___________.
She will never forget the days ______ she spent in Beijing.
He loves his parents deeply, ________ are very kind to him.
I had to tell some of them what we wanted to do next, because ________.
When my mom saw the _______ gift I had prepared for her, she ________.
________ of this term, we will have learnt 4 books.