They recommended______smaller heating and cooling systems.A、to useB、to be used

游客2024-01-19 80

问题 They recommended______smaller heating and cooling systems.

选项 A、to use
B、to be used
C、being used
D、using

答案 D

解析本题考查recommend的用法，recommend doing sth．意为“建议做某事”。

转载请注明原文地址:https://tihaiku.com/zcyy/3375382.html

相关试题推荐

随机试题

最新回复(0)

Thedirectorrecommendedshe______Englishbeforegoingabroad.A、havetostudyB、