Решение #1
a) Avoid meeting bears in the forest. They are aggressive this time of year.
b) Riding a bicycle avoid busy streets.
c) Avoid poisonous animals and plants during your Round-the-World tour.
Решение #2
a. Avoid throwing away cans, bottles and packets in the country.
He выбрасывайте банки, бутылки и пакеты загородом.
b. Avoid riding bicycles along roads, crowded with cars.
Hе катайтесь на велосипедах вдоль дорог, заполненных машинами.
c. Avoid dropping litter in the sea.
He бросайте мусор в море.