Help · 幫助 A drone helps ___ ___. 無人機幫助 ___ ___。 "A drone helps farmers check fields."🔊 "A drone helps doctors send medicine."🔊
Opinion · 看法 I think ___ is the most useful. 我覺得 ___ 最有用。 "I think rescue is the most useful."🔊 "I think delivery is the most useful."🔊