As we grow up, it always _______ that after we give something up, we gain something new in its place.
Many beautiful fish are disappearing____ the severe(严重的) pollution.
---- Where does Mr. Black live ? Can you guess? ----- Sorry, I can’t guess ________.
Make sure you’ve got the passports and tickets and _______ before you leave.
It was in New Zealand _______Elizabeth first met Mr Smith .
---It’s a long time since I saw my sister. ---______ her this weekend?