We don't have any milk.We have to buy some food for breakfast.
由之前的时态可知用一般时就可以了,并且通过题意知道所填的词是必须的意思所以有must 和have to,因为这里有客观的必须的含义,所以选择后者
We don't have any milk.We have to buy some food for breakfast.
由之前的时态可知用一般时就可以了,并且通过题意知道所填的词是必须的意思所以有must 和have to,因为这里有客观的必须的含义,所以选择后者