Where do you _____ I go this evening? — I think you’d better stay at home instead of going anywhere. [ ]

It was lucky that little Jack wasnot at home when the fire broke out；otherwise，he hislife．

Excuse me, do you know________ —Sure, there is a bookstore down the street near here.

What’s this——______ a key.

___ surprised me most was ____ he was too late for the important meeting, for he was chairman of it