-- What would you like to do this Sunday?-- If it rain, I to Mount Tai for a spring field trip.A. not; will go B. doesn’t, will go C. won’t; will go
--- Red-crowned cranes need more people’s help. ---Yes. People working in the reserves are doing everything they can ____these birds.
---I often hear a new-born baby next door __________ a lot at night. ---Maybe the baby is hungry then.
About seventy percent of our earth _______ by water.
Today the forests are getting fewer and fewer. We must______ down too many trees.
What’s the sentence structure of “ Spring is warm and sunny.”?