1 1) he a travel guide for the last six months. (write)
2) thousands of tourists the temples in Thailand this year. (see)
3) i never to an elephant sanctuary before. (go)
4) my friends around Australia for the last three months. (travel)
5) we can't visit the caves because the authorities them. (close)
6) i've run out of money now,but i some souvenirs. (buy)
7) she always traveling alone . (hate)
8) my back really hurts. i that heavy back pack all day. (carry)
9) he several serious illneses since going abroad. (catch)
10) i always of myself as a traveller rather than a tourist. (think)

1) He has been writing a travel guide for the last six months. (Он пишет путеводитель в течение последних шести месяцев.)
Explanation: The sentence is in the present perfect continuous tense, which is used to describe an action that started in the past and is still ongoing. In this case, the action of writing the travel guide started six months ago and is still happening.

2) Thousands of tourists have seen the temples in Thailand this year. (Тысячи туристов видели храмы в Таиланде в этом году.)
Explanation: The sentence is in the present perfect tense, which is used to describe an action that happened at an indefinite time in the past with a connection to the present. In this case, the action of seeing the temples happened at some point this year.

3) I have never gone to an elephant sanctuary before. (Я никогда не ходил в приют для слонов раньше.)
Explanation: The sentence is in the present perfect tense, which is used to describe an action that happened at an indefinite time in the past with a connection to the present. In this case, the action of going to an elephant sanctuary has never happened before.

4) My friends have been traveling around Australia for the last three months. (Мои друзья путешествуют по Австралии последние три месяца.)
Explanation: The sentence is in the present perfect continuous tense, which is used to describe an action that started in the past and is still ongoing. In this case, the action of traveling around Australia started three months ago and is still happening.

5) We can't visit the caves because the authorities have closed them. (Мы не можем посетить пещеры, потому что власти закрыли их.)
Explanation: The sentence is in the present perfect tense, which is used to describe an action that happened at an indefinite time in the past with a connection to the present. In this case, the action of closing the caves happened at some point in the past and is still affecting the present.

6) I've run out of money now, but I have bought some souvenirs. (Я сейчас остался без денег, но я купил некоторые сувениры.)
Explanation: The sentence is in the present perfect tense, which is used to describe an action that happened at an indefinite time in the past with a connection to the present. In this case, the action of buying souvenirs happened before running out of money.

7) She always hates traveling alone. (Она всегда ненавидит путешествовать одна.)
Explanation: The sentence is in the present simple tense, which is used to describe habitual or general truths. In this case, the speaker is describing the general truth that she always hates traveling alone.

8) My back really hurts. I have been carrying that heavy backpack all day. (Моя спина очень болит. Я носил этот тяжелый рюкзак весь день.)
Explanation: The sentence is in the present perfect continuous tense, which is used to describe an action that started in the past and is still ongoing. In this case, the action of carrying the heavy backpack started in the past and is still causing pain in the present.

9) He has caught several serious illnesses since going abroad. (Он переболел несколькими серьезными болезнями с момента отъезда за границу.)
Explanation: The sentence is in the present perfect tense, which is used to describe an action that happened at an indefinite time in the past with a connection to the present. In this case, the action of catching several serious illnesses happened at some point since going abroad.

10) I always think of myself as a traveler rather than a tourist. (Я всегда считаю себя путешественником, а не туристом.)
Explanation: The sentence is in the present simple tense, which is used to describe habitual or general truths. In this case, the speaker is describing the general truth that they always think of themselves as a traveler, emphasizing the difference from being a tourist.