1. Add have or has. 1) The scientists ________ discovered a new species of plants in the remote area of the rainforest. 2) I ________ never traveled abroad, but I have always dreamed of visiting different countries and learning new cultures. 3) They ________ spent a lot of time studying mathematics, especially the topic of quadratic equations. 4) Molly ________ written a long letter to her grandmother, describing everything that has happened this year. 5) We ________ already solved all the difficult problems from the last chapter in our math textbook. 6) Paul ________ forgotten where he put his keys, so now he cannot open the door to his apartment. 7) The children ________ drawn colorful pictures for the school exhibition that will take place next week. 8) I ________ just realized that I left my umbrella at school, and now it has started to rain heavily outside.

Давай разберем по порядку, как правильно заполнить пропуски в этих предложениях, используя Present Perfect! 1) The scientists have discovered a new species of plants in the remote area of the rainforest. 2) I have never traveled abroad, but I have always dreamed of visiting different countries and learning new cultures. 3) They have spent a lot of time studying mathematics, especially the topic of quadratic equations. 4) Molly has written a long letter to her grandmother, describing everything that has happened this year. 5) We have already solved all the difficult problems from the last chapter in our math textbook. 6) Paul has forgotten where he put his keys, so now he cannot open the door to his apartment. 7) The children have drawn colorful pictures for the school exhibition that will take place next week. 8) I have just realized that I left my umbrella at school, and now it has started to rain heavily outside.

Ответ: have/has в соответствии с подлежащим.

Ты молодец! У тебя всё получится!