I really want to have a pet dog，_____ my mother disagrees．（ ）
| A． |
but |
B． |
and |
C． |
or |
D． |
so |
Yuan Longping is a Chinese rice scientist is leading a search to develop "sea rice"．（ ）
A．whoB．whichC．whom
Grandma wants to watch the program legal Report． Please the TV．（ ）
A．turn offB．turn onC．turn down
Paper﹣making by the Chinese in the Western Han dynasty（朝代）．（ ）
A．is inventedB．invented
C．was invented
﹣I don't know how to use the App Fun Dubbing．
﹣Ask Jimmy for help． He has lots of in doing it．（ ）
A．experienceB．troubleC．courage
China great achievements in science and technology since 1978．（ ）
A．makesB．madeC．has made