一When did you buy this still life picture?一It was in 1999 I traveled in Paris.
_________ across the railway, a train hit it.
Mary’s skirt looked just the same as Joan’s, but it cost __________ hers.
Finally, he found his calculator __________ he lost it.
--What can I do for you? -- If you __________ see Mr. Smith, give him my regards.
In this institute, a medal with nine thousand dollars __________ gains success in science and technology every other year.