Прочитайте текст и вставьте вместо каждого пропуска нужную грамматическую форму, выбрав её из выпадающего списка

More and more people go camping as it is [become|became|becoming|becomes] warmer and warmer with every day in spring. However, not every person [know|knows|knowing|is knowing] about some simple and important rules which can help one to enjoy camping more. Let's have a brief look at some of those rules.

First of all, it [was|is|am|are] crucially important to take a first aid kit with you. Nobody knows what can happen during several days in a forest or on a river bank, so it is better to be well [prepare|preparing|prepares|prepared] for the case of emergency. Your kit should contain some antiseptic, several bandages, some painkillers and maybe some ice packs.

Secondly, [don't|didn't|doesn't|aren't] forget to take some warm clothes with you! Even if it is very hot outside during the day, it might be freezing at night. Also, the weather forecast may change while you are camping.

Thirdly, make sure that you've taken a pen knife and a rope with you before you finish packing your rucksack. These two simple tools can be extremely useful in the wild!

Finally, it's a great idea to grab an insect repellent with you. Even if there [is|am|are|was] no mosquitoes in your neighbourhood, it doesn't mean there are still no insects in nature.