Task 1: Fill the missing words in the blanks. Imagine your life without (0) electricity. Before electricity, we didn’t have useful things such as (1)
Task 1: Fill the missing words in the blanks. Imagine your life without (0) electricity. Before electricity, we didn’t have useful things such as (1) __________, computers and mobile phones. Inventors need (2) __________ and (3) __________. Before the rubber, people used bread to rub out writing! In 1839 Charles Goodyear had an (4) __________. … Đọc tiếp