It is hard to say what kind of person he is. Sometimes he is very friendly; at other times he ___ be very cold.
If you ______ an hour earlier, you wouldn’t have been caught in the rain.
I’d like to recommend some new computer programs _______ for home buildings.
We haven’t discussed yet ______ we are going to place our new piano.
She has owned the painting since 1950, when it ______ to her as a wedding present.
You can get to your destination earlier ______ you don’t mind taking the night train.