You’d better leave the key at home __________ one of us should think of coming back.—Why? Is your key lost? [ ]

He never says a bad word about anyone , ____—_____. He is very kind .

23We went into a hall, on_____walls hung a few pictures of some famous scientists

I ___ like to eat fish.

Were all the supplies for the people carried to the flood-stricken areas?—No, only some of them nearly all the roads there cut off