– How do you learn to live an easy and happy life ?
– regarding problems as challenges.
A. For B. By C. On
Tom and Jim are talking. We should tell them _______ noise while watching birds.
| A．don’t make | B．not make |
| C．not making | D．not to make |
---_______ do people cut down so many trees here?
--- To get enough space for a new road.
| A．Why | B．How | C．When | D．What |
--- Red-crowned cranes need more people’s help.
---Yes. People working in the reserves are doing everything they can ____these birds.
| A．save | B．saving |
| C．to save | D．to saving |
---I often hear a new-born baby next door __________ a lot at night.
---Maybe the baby is hungry then.
| A．to cry | B．cry | C．to laugh | D．laugh |
About seventy percent of our earth _______ by water.
| A．is covering | B．is covered |
| C．are covered | D．are covering |