Scientists think laser (be)______one of the most useful tools today.to beto be在此

游客2024-06-26 9

问题 Scientists think laser (be)______one of the most useful tools today.

选项

答案 to be

解析 to be在此是不定式作宾语补足语。

转载请注明原文地址:https://tihaiku.com/zcyy/3650819.html

相关试题推荐

随机试题

最新回复(0)