I didn’t quite follow him because he explained the theory _____that is too abstract for me.
Don't get off the bus ________ it is stopping.
—John always thinks of others instead of himself.—So he does. It is________ him to offer help to others.
Considering the advantages of the method, they decided to ________ it.
Teaching as a career ________ to many people because of the long holidays.
She felt _____of doing that and tears ran down her cheeks.