题目

My friends and I joined a two-day survival(生存)training class in the mountains. The first day was really______, there was so much to do! Arriving at the campsite, we were divided into two groups and given a tent, some food, a ______and a compass. Standing next to a small river, Fanny suggested camping in the grassy area nearby. However, our instructor, Mr. Lee, pointed out that it might flood(淹没)if it rained. In the end, we found a______ area. Putting up the tent was really hard. Luckily, Mr. Lee helped us a lot. By the time we had put up the tent, everyone was really hungry.“We填空。我们学过的时间单位有 ， 和 ， 它们之间的进率是。