【推荐1】Speed is r___________ to 30 mph in towns. （根据首字母单词拼写）

【推荐2】Some roads may have to be closed at peak times to __________ (限制) the number of visitors. （根据汉语提示单词拼写)

【推荐3】Governments need to consider making ________ and taking ________ actions and measures to reduce greenhouse gas emissions. We as individuals can also reduce our “carbon footprint” by ________ the amount of carbon dioxide our lifestyles produce. (根据句意填空)

【推荐1】The old man usually likes to ________ (观察) the sun rise and set. （根据汉语提示单词拼写）

【推荐2】He quoted some old Chinese sayings to _________(阐明) his points.

【推荐3】The aim of the meeting is to ________ (加强) the relationship between the two countries. (根据汉语提示单词拼写)