问题
填空题
填入适当的基数词，完成句子。
1. What's ___________ and five? It's twenty.
2. What's seventy and ___________? It's one hundred.
3. What's ___________ and eighteen? It's fifty-nine.
4. What's ___________ and thirteen? It's sixty-two.
5. What's ___________ and eight? It's ninety-seven.
答案
1. fifteen 2. thirty 3. forty-one 4. forty-nine 5. eighty-nine