54. It's very cold outside. You should put on more clothing to ______, otherwise you will catch bad cold.
–That would mean ____ a lot of time. --Really? I don’t mean ____ any time.
____ the TV play, he got down to ____ his homework.
—Will you go skiing with me this winter vacation? --- It __________________.
I lost my way. I wonder ________ I can turn in the dark.
—Do you mind if I keep pets in the building? --- _________________.