We __________ back in the hotel now if you didn’t lose the map.

When I met him the other day，it was the first time we ______ each other since we graduated from school.

We’d better set off now or it will be dark ______ we know it[ ]

She laid a tablecloth ______ the dining table to keep dust ______ it.

Only in recent years ______ begun torealize that wild dogs, kept within bounds, often do more good than harm.