1Can jack and his classmates （）good friends?（be）2My birthday

1 be ( can 后接动词原形）
2 The third of October is my birthday .
/
I was born on October 3rd .
4 He looks after his sister well .
好好照顾 look after ..well = take good care of
5 helpful 有用的.
加油!不明白再问!