Complete the sentences using the present perfect form of the verbs. The specialist has helped Georgia.(help)​

1. in 1995 java was licensed by netscape for use in their internet browser, navigator. 2. basic has been extended by microsoft in its visual basic product. 3. perl was developed by lary wall in 1987. 4. specific problems are not solved by systems software. 5. in the last ten years, speed trap units have been installed by police on many busy roads.

1.he is the strongest boy in our class

2.that cake is the worst

3.my book was more interesting than his book

4.he was the most handsome man in the family

5.his flat was bigger than his friend's

1.maths is easier than history for me

2.his backpack is lighter than mine

3.their camping stove is cheaper than ours

4.my torch is better than yours

my mother is a doctor . she goes to work and treats children .

каждый год  большое количество туристов  со всего  мира приезжают  в россию.какой совет  вы бы дали  туристам, кто собирается  посетить его  / ееродственников?