问题标题：
【1.theearth____(go)aroundthesun.2.Look!thelittlecat_____(eat)thebeef3.peer_______(ski)andskatedyesterday4.mymother________(cook)at6:00pmyesterda5.whichis__________________(difficult),thisoneortheone?】
问题描述：
1.theearth____(go)aroundthesun.2.Look!thelittlecat_____(eat)thebeef
3.peer_______(ski)andskatedyesterday
4.mymother________(cook)at6:00pmyesterda
5.whichis__________________(difficult),thisoneortheone?
富巍回答：
1.goes
2.iseating
3.skied
4.wascooking
5.moredifficult
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