... exercises. 7. Mr. Smith saw the accident. 8. They started a dancing class last week. 9. You should insure the package. 10 . He may pay the bill for us. 17 1. You ought to water the plants once ... )with give adjective. 1. The CD is 20.000 dong , the cassette is 12 .000 dong. (expensive)The CD……………………………………………………………………….2. The church is built in 1 878 and the library in 19 25.(old)The church ... every morning . She ( brush ) ……………………her teeth now . 16 . Listen ! Lan ( play ) ……………………….the piano . 17 . Mai ( be ) ………………….tired now . 18 . It is 6:00 p.m . Mary is at home . She ( have )...