Câu 3 · 3/24
Read the fictional advertisement and choose the best options for blanks 1–4.
**Discover a new way to practice with Study Steps!**
Study Steps is an imaginary learning app used in this exercise. It helps learners practice (1) _____ through short activities. The app offers (2) _____ lessons in subjects such as English and science. Users can read examples, play vocabulary games and take quizzes. Teachers have designed the activities to support classroom learning, not to replace it. You can use the app (3) _____ your phone or tablet. Start (4) _____ with one short lesson and review the feedback before moving on.
Đề bài
Choose the best option for blank (3).
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Aof
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Bat
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Cin
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DĐáp ánon
Hướng dẫn giải
**Đáp án: D.** Use an app on a phone or tablet: dùng ứng dụng trên điện thoại hoặc máy tính bảng. Giới từ on diễn đạt thiết bị/nền tảng sử dụng trong câu này.