With the country’s population increasing to 1.3 billion, many of China’s rivers, including the legendary Yellow River,       .

         A．is drying up             B．will be drying up    C．had dried up           D．are drying up

With the country’s population increasing to 1.3 billion, many of China’s rivers, including the legendary Yellow River, ________．

1. A.
   is drying up
2. B.
   will be drying up
3. C.
   had dried up
4. D.
   are drying up

With the country’s population increasing to 1.3 billion, many of China’s rivers, including

the legendary Yellow River_________.

       A．is drying up  B．will be drying up    C．had dried up D．are drying up

With the country’s population increasing to 1.3 billion, many of China’s rivers, including the legendary Yellow River,       .

         A．is drying up         B．will be drying up         C．had dried up      D．are drying up

With the country’s population increasing to 1.3 billion, many of China’s rivers, including the legendary Yellow River,       .

A．is drying up           B．will be drying up          C．had dried up      D．are drying up