________ many times , he finally understood it.
| A．Told | B．Telling | C．Having told | D．Having been told |
With the address to help him he had no ____ in finding her new house.
| A．difficulties | B．difficulty | C．troubles | D．mistkes |
Six ___ are eating grass at the foot of the hill.
| A．sheeps | B．sheep | C．sheepes | D．shoop |
Do you brush ___ every day?
| A．your tooth | B．your tooths | C．your teeth | D．teeth |
That farmer has many ____ on the farm.
| A．geeses | B．gooses | C．goose | D．geese |
Deng Xiao Ping’s works ___ publihed.
| A．has been | B．have been | C．was | D．is |