The U. S. population of kids (grow)______since the 1970s, and will remain at hig

游客2023-09-20 29

问题 The U. S. population of kids (grow)______since the 1970s, and will remain at high levels through the 1990s.

选项

答案 has been growing

解析根据句意，空格处应填写一个谓语动词，应该使用现在完成进行时。

转载请注明原文地址:https://tihaiku.com/zcyy/3030792.html

相关试题推荐

随机试题

最新回复(0)

If(keep)______inhumidcondition,themilkcan’tremainfreshforthreedays.