I’m sorry. I forgot(忘记) my baseball. Now I ______it. Can you help me?—Yes, I’d love to.

Do you teach ________ foreign languages? —Yes, I learn them on TV.

The temperature now is much higher than______of 100 years ago because of more and more greenhouse gas.

The aged lady smiles so sweetly that she _________ me of my beloved grandmother.

Our teachers are very friendly _____ us.[ ]