Cars cause pollution, but people still want them. => Although _________________.
Cars cause pollution, but people still want them.
=> Although _________________.
Đáp án: Although cars cause pollution, people still want them.
Giải thích: Although + S + V: mặc dù
Dịch: Mặc dù ô tô gây ô nhiễm không khi, mọi người vẫn muốn chúng.