I have been helping the panda keepers at the zoo to feel more comfortable and confident speaking English. And who do they speak English ___38___?

上面一句出自2023新全国卷2的语法填空题，所给答案是 with，可以用 to 吗？

附全文如下：

Whenever I tell people that I teach English at the Berlin Zoo, I almost always get a questioning look. Behind it, the person is trying to figure out who exactly I teach…the animals?

Since June 2017, right before the ___36___ (arrive) of the two new pandas, Meng Meng and Jiao Qing, I have been helping the panda keepers at the zoo to feel more comfortable and ___37___ (confidence) speaking English. And who do they speak English ___38___?

Not the pandas, even though ___39___ language used for the medical training instructions is actually English. They talk to the flood of international tourists and to ___40___ (visit) Chinese zookeepers who often come to check on the pandas, which are on loan from China. They also need to be ready to give ___41___ (interview) in English with international journalists. This is ___42___ they need an English trainer.

So, what are they learning? ___43___ (basic), how to describe a panda’s life. It’s been an honor to watch the panda programme develop ___44___ to see the pandas settle into their new home. As a little girl, I ___45___ (wish) to be a zookeeper when I grew up. Now, I’m living out that dream indirectly by helping the panda keepers do their job in English.