用动词的正确形式填空。yesterdaytodaytomorrowwalksaw go be going to skateeatpoint-六年级英语

yesterday

today

tomorrow

walked

walk

be going to walk

saw

see

be going to see 

went

go

be going to go

skated

skate        

be going to skate

ate

eat

be going to eat

pointed

point

be going to point