When I was 15, my family moved to Washington. I tried skateboarding there, but the locals were far less welcoming. Within a couple of years, I'd given it up. [摘自2021全国卷甲,C]请问上面语境中的句子within a couple of years, I'd given it up为什么使用过去完成时态表达。...
...认卡增加词汇量。Those flash cards have a
question on one side and the answer on the 那些教学卡片一面写的是问题，另一面写的是答案。【征稿说明】编写体例：欢迎有兴趣的老师参照现有体例为2017版的3000课标词汇以及新教材词汇编写词条...
It is a real pleasure to be here to open the third meeting of our forum and to be welcoming such a distinguished and influential group of people fromboth our countries,many of whom are now old friends.老师，这里的to be welcoming 改成 to welcome 可以吗？
The development of cameras so small that they can be swallowed by patients ____.have made diagnosing certain diseases much easierhas made it much more easier to diagnose certain diseaseshas made certain diseases much easier to diagnosemake diagnosing certain diseases much easierare making it much ea...
...e many contemporary peoples, Upper Paleolithic men and women believed that the drawing of a human image could cause death or injury, and if that were indeed their belief, it might explain why human figures are rarely depicted in cave art.在这句话中like many contemporary peoples做什么成分...
If the man is only interested in your looks, ____ just shows how shallow he is.答案填 that，说 that 指代的是前面的状语从句，that 不是不可以指代句子么？如果可以指代句子 除了指代状语从句还可以指代哪种句子么，谢谢！