请写出下列各单词的过去式。1 is/am 2 win 3 are 4 become 5 begin 6 bring 7 buy 8 can 9 come 10 cut 11 do 12 draw13 drink 14 drive 15 eat 16 fall 17 feel 18 find 19 fly 20 get 21 give22 go 23 have 24 hear 25 hurt 26 keep 27 know 28 learn 29 leave 30 let31 lose 32 make 33 meet 34 put 35 read 36 run 37 say 38 see 39 sell40 send 41 shall 42 sing43 sit 44 sleep 45 speak 46 stand 47 swim 48 take49 teach 50 tell 51 think 52 wake 53 wear 54 will
