【推荐2】Arriving at the factory half an hour early is his habit. (句型转换)
→His habit is ___________________.

【推荐2】到2019年，这个数字涨到了三百万，他们都为此感到惊讶。(figure)
By 2019, ________________ to 3 million, at which they were all amazed.

【推荐3】作为一个没有经验的老师，我想尽一切办法让他们安静下来，但都是徒劳。我的恐慌正在上升，我可以感觉到我的心脏狂跳。
As an inexperienced teacher,I tried every means to get them to be quiet,but in vain. __________and I could feel my heart beating wildly.

【推荐2】这些学生的年龄在17岁到21岁之间, 平均年龄为19岁。
The age of the students _________ _______ 17 ______ 21 with an average of 19.

【推荐3】一方面，我们应该对未来乐观，另一方面，我们应该做好充分准备。
On the one hand，we should be optimistic about our future and ________________，we should make full preparations.