短语讲解：

1. Now those nursing jobs are available to immigrants looking for the American dream.

look for 寻找（某人或某物）
例句：She acts as though she plans to look for another job.
她表现出象是打算另找工作的样子。

2. I would say that I'm seeing a difference in the level of motivation - knowing that there is this big Red Cross board exam coming up at the end of the course is really motivating to them.

at the end of 在…结尾，在…末端
例句：At the end of the wood, the path diverges to the left.
在树林的尽头,小路向左拐去。

3. Next to their classroom, there is a room that looks like a hospital room.

look like 看起来与（某人或某物）相像[相似]
例句：He did not look like a evil person.
他看起来不像一个恶人。