To save class time, our teacher has ________ students do half of the exercises in class and complete the other half for our homework.
| A．we | B．us | C．our | D．ours |
She was given the chance to ______ designing the new bridge.
| A．take part in | B．attend | C．go all out | D．join |
The mother ________ her son's success in the newspaper.
| A．learned about | B．learned | C．heard | D．learned from |
Sports build the body _______ reading builds the mind.
| A．while | B．when | C．as | D．for |
As we all know, ______ knowledge comes from _______ practice.
| A．the; the | B．a; a | C．the ;× | D．×; × |
We should prevent pollution ________ happily.
| A．to live | B．for living | C．from living | D．living |