The child asked his father ______ go out to play tennis.
| A．that he could | B．if he could |
| C．whether could he | D．that if he could |
____time,Chinese farmers have invented many farming techniques.
| A．Over | B．In | C．On | D．For |
When he ran downstairs, he tried to avoid ____by the teacher.
| A．being seen | B．seeing | C．to be seen | D．to see |
Books of this kind ______ well.
| A．sells | B．are sold | C． sell | D． is sold |
Her parents asked her ______ her work.
| A． how was she getting along with | B．how she was getting along with |
| C． how was she getting on with | D．Both A and C |
Sea water _____ many minerals, salt _____.
| A．contains， included | B．contains， including |
| C．includes， contained | D．includes ， containing |