Điền dạng đúng của động từ trong ngoặc : hiện tại hoàn thành hoặc quá khứ đơn. 1.Someone (turn) ... on the hi-fi.Do you know that song ? 2.The match (just start ) ... Our team mare playing very well.  3.My mother (do) ... all the cleaning . The apartment is really clean now . 4.He (lose) ... his credit card.He can't find it anywhere . 5.Prices (go)... up. Everything is more expensive nowadays . 6.(you/buy) ... the scanner yet ?  7.I (have) .. this computer for three years . My father (give) ... it to me when i was in grade 6. 8.I ( watch) ... the film Titanic already. 9.Miss White (work) .. in Hn from 2001 and 2004. 10.I (be) .. to Sapa twice 2000. 11.They (not see) ... the film Titanic yet. 12.Tom (call) ... his boss yesterday. 13.John (read) ... the letter from Mary already . 14.We (not begin) ... to learn for the test yet. 15.I (meet) ... Robert at the supermarket this morning . 16.Nancy (be) ... to Vn several times . 17.I (not see) ... your brother . 18.When ( your father / give up ) ... smoking ? 19.My pen isn't here any more . Someone (take) ... it already . 20.The motorbike looks clean. (you/wash) ... it ?  21.My uncle ( move) ... to Dalat in 2005. 22.The Greens (live) ... in this city for 20 years . 23.My father (work) ... for the foreign company since last year . 24.We (spend) ... our summer vacation in halong bay last july. 25.Our teacher (explain) ... to us how to use the printer already. 26.The postman (deliver) .. the letter half an hour ago . 27.Mai (not finish) ... her homework yet. 28.I (visit) ... our form teacher in the hospital already. 29.I (hear) ... the good news from Mary a few minutes ago, 30.They (not start) ... the project yet .