Tiếng Anh Lớp 10 · Unit 5: Inventions – hiện tại hoàn thành, danh động từ và động từ nguyên mẫu

Choose the correct answer: Scientists ______ many useful inventions since the 19th century.

Choose the correct answer: A smartphone is useful for ______ photos and videos.

Choose the correct answer: Laptops are used ______ documents and access the Internet.

Choose the word whose main stress is placed differently from the others.

Complete the sentence: I (1) (never / use) a 3D printer, but my brother (2) (buy) one last year.