1、He usually goes to school by bus,but last week he walked(walk)to school.(根据last week表示时态为一般过去时,所以填过去时walked)
2、Did you have(have)any eggs for breakfast yesterday (根据yesterday表示时态为一般过去时,因为是一般疑问句,所以用助动词did,因为用了did所以have还原)
3、There was(be)some bread in the box yesterday .(根据yesterday表示时态为一般过去时,因为面包是不可数名词,要用is,所以填was)
4、Sam was(be)here half an hour ago.(根据an hour ago表示时态为一般过去时,因为Sam是第三人称,所以用动词第三人称单数形式was)
5、---Where did you meet(meet) the famous actor
---I met him in Beijing.(根据回答中met是过去式,所以表示时态为一般过去时,因为是一般疑问句,所以用助动词did,因为用了did所以meet还原)