—What does the sign over there read?―“No person ______ smoke or carry a lighted cigarette,cigar or pipe in this area.”
_________ around our school campus, the visiting teachers from other schools were led to our meeting room.
The joke was so interesting that we all burst out laughing. Never before __________ heard a joke like that.
—What job do you want to have ,Steve? —I’d like to find a fun and challenging job, one _________ I can always try out my new ideas.
The fact has worried teachers and parents ________ more and more students have got near-sighted.
Thanks to the Internet, we have_________ to data quickly and effectively, regardless of where we are and what we are doing.