-Thiskindofsportsisexciting.
-Yes,butit'sdangerous.Onecan'tdoit_______heorshehasgotsometraining.
A、if-Whoknowswhatpandasandsheeplikeeating?
-Iknowpandaslikeeating_______andsheeplikeeatinggrass.
Do you know ________?
English_________ in many countries.
Mom asked me to _____________ grandpa when she w as out.
The money will be used to help the people _____ lost their homes in the earthquake( 地震).
