{{B}}quEstions 19—22{{/B}}

A、Biology ClAss At 8 o’CloCk AnDEnglish ClAss At 11 o’CloCk.
B、nursing ClAss At 8 o’CloCk AnDEnglish ClAss At 11 o’CloCk.
C、Biology ClAss At 8 o’CloCk AnD nursing ClAss At 11 o’CloCk.
D、nursing ClAss At 8 o’CloCk AnD Biology ClAss At 11 o’CloCk.