Regular / irregular verbs. Which of the verbs are regular ones?

Regular / irregular verbs. Which of the verbs are regular ones? Write in the correct form of each verb in the Past Simple. R) regular verb I) irregular verb On the 15-th of October, two men 1 (to try) to get to the top of Everest. They 2 (to make) their camp at the bottom of the mountain. They 3 (to feel) very well in it. It 4 (to be) the highest camp on the mountain. The night before the climb, they 5 (to drink) tea and had supper. They 6 (to discuss) what to take with them to the top. They 7 _ (to decide) to leave their sleeping bags and tents behind because the equipment 8 (to be) too heavy. Early in the morning they ___9___ (to have) breakfast and 10 (to get) dressed. Then they 11 (to start) to go up the mountain. It 12 (to be extremely difficult. The snow 13 (to be; very deep After a long, hard fight they 14 (to reach) the top together. They 15 (to laugh), 16 (to shout) and 17 (to take) some photographs. Then the sun 18 (to disappear) and the two men 19 (to realise) they 20 (to be) on the top of Everest and it 21 (to be) almost night. Their camp 22 (to be) too far to reach. They 23 (to go) a little way down the mountain, but there 24 (to be) no moon and it 25 (to be) too dangerous. They 26 (to have) to spend the night on the mountain, at about 10,000 metres, with no tent, sleeping bags or food. They 27 to believe) it 28 (to be) possible. They 29 (to dig) a hole in the snow, and 30 (to bury) themselves. They 31 (not to sleep). It 32 (to be) -30 C. When the light 33 (to come) at last they 34 (to begin) climbing down, and soon they 35 (to get) to their camp. Everybody 36 (to be) happy.