—I left my keys in my office. Could you help me ___        them?—OK．I’ll do it at once．

 I hope my father ________ ask me about my marks after every exam.

I like the ____ the story. It’s  fun.

— Do you feel like ______ out for a walk ?— Sorry, I would like ____ at home.

—We should do what we can ________ the endangered animals.—Yes, it’s our duty_________ them.