Question

i spend an hour day -- my homework。A.on B.in C.at D.for

Answer 1

spend: 表示花费时间的时候用“on”+doing sth
表示花钱的时候用“in”+doing sth
因此，选A

Answer 2

A.on

spend...on/(in)doing sth 花费...做某事;

spend sth. on sth. / (in) doing sth. 在……上花费时间或金钱;

Answer 3

spend + time + (in) doing sth.期中in可以省略
spend + money + （on）doing sth.期中on可省略

spend + money + on sth.期中on不可省略

Answer 4

选A sb. 因为固定短语spend time\money on sth.

Answer 5

A
spend +时间 on sth./doing sth.