What _____ are you guys doing? I am freaking out(我很不安).A. in earth B in the earth C. on the earth D. on earth
--- It’s difficult for the village children to cross the river to get to school. --- I think a bridge ________ over the river.
--- Can we leave the classroom now? -- No, you ______. You ______ to leave until the bell rings.
You shouldn’t ______ your hope. Everything will be better.
---Let’s go hiking ___________ staying at home, shall we? ---A good idea.
Come on, children! Help _____ some chicken.