My sister is waiting for me ,（so ） l must be off now.
Men （and ） women ,old （and ） young ,all joined in the sports.
You can go either by boat （or ） by car.
Are we going to have the contest today （or ） tomorrow?
Gao Shan can sing ,（but ） he can't dance.
We couldn't walk very fast （because ） the road was slippery.
Merry christmas （and ） Happy New Year!
（Because ） he was busy ,he was absent.
Yang Ling does better in PE.
（Both ） you and he are right.
加油!不明白再问!内个第九题我没打完呢
第九题应该是
YangLingdoesbetterinPE（）him确定没打错？