Яне могу magic, gym, sugar, sausage что

sugar лишнее, так как в остальных словах буква g произносится как [dʒ]

волшебный, варенье, сахар, колбаса

лишнее, естественно 1 (волшебный)

лишнее слово:

1. did

2. или-  the, или тут всё правильно.

3.were(2)

4.did, и знак вопроса не надо, потому что если это вопрос,то будет:

were they reading a book when mum came?

everyone agrees that unless tiger population is protected ,they will become extinct.if it were not the efforts made by international campaigns the extinction would already have become a fact.it is time to cooperate and help to animals otherwise the future will be sad.supposing there were no tigers left in the world: how would we all feel? !