WB ex 2/74
2) litter, 3) fountain, 4) playground, 5) flowers, 6) path
WB ex 1/75
2) mustn't, 3) must, 4) mustn't, 5) mustn't
WB ex 2/75
2) must be, 3) must do, 4) mustn't pick
WB ex 1/76
NB! Pay attention to capital letters and punctuation!
2) You mustn't walk your dog (here). 3) You must put litter in the bin. 4) You mustn't walk on the grass. 5) You must turn off your mobile phone.
WB ex 2/76
2) must, 3) must, 4) mustn't, 5) must, 6) must, 7) mustn't
WB ex 2/77
2) today, 3) play, 4) rain, 5) trains, 6) case, 7) race
WB ex 2/78
a) 2, b) 3, c) 4, d) 1, e) 8, f) 5, g) 7, h) 6, i) 11, j) 12, k) 9, l) 10
WB ex 1/79
2) and, 3) or, 4) and, 5) and, 6) or
WB ex 2/79
2) comics, 3) homework, 4) MP3 player, 5) quiet