1.We must across the road carefull.2.Mary will g1.We must across the road carefull.2.Mary will get there by the bus.找出下列句子中错误的单词或词组,修改正确

1.We must across the road carefull.2.Mary will g
1.We must across the road carefull.
2.Mary will get there by the bus.找出下列句子中错误的单词或词组,修改正确

1.carefully
2.by the bus 改成by bus