Finally, my first clas had arrived.

终于，我开始了我的第一堂课。

youdao

Everyone in the clas cooperated to do the science to do the science experiment.

班里所有人合作来进行科学实验。

youdao

Everyone in the clas cooperated to do the science to do the science experiment.

班里所有人合作来进行科学实验。

youdao