Haze (雾霾)appears around us. Let’s do ________ helpful to protect the environment.
________ her great joy, her daughter was finally saved by the doctors.
Stop ______ about the traffic. Just think about what we can do to improve it.
English is useful language. We should learn it well.
She worked day and night to get the first in the English speaking competition. And at last her work paid.
They all get dressed in white T-shirts today.