Scientists Ahave long Bstruggle with how to measure the Ceffects of climate chan

游客2024-01-14  21

问题 Scientists Ahave long Bstruggle with how to measure the Ceffects of climate change Don wildlife.

选项 A、 
B、 
C、 
D、 

答案 B

解析 本题考查现在完成时。现在完成时的构成为have+done。故选择B,应改成struggled with。
转载请注明原文地址:https://tihaiku.com/zcyy/3361979.html
最新回复(0)