My younger sister ___the Youth League ___2008.1 has joined~in 2 has ioined~since3 joined~since 4 joined~in

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/22 21:51:24
Myyoungersister___theYouthLeague___2008.1hasjoined~in2hasioined~since3joined~since4joined~inMyyounge

My younger sister ___the Youth League ___2008.1 has joined~in 2 has ioined~since3 joined~since 4 joined~in
My younger sister ___the Youth League ___2008.
1 has joined~in 2 has ioined~since
3 joined~since 4 joined~in

My younger sister ___the Youth League ___2008.1 has joined~in 2 has ioined~since3 joined~since 4 joined~in
4
整句意思是:我年幼的妹妹在2008年加入了共青团.
用过去时,用介词in,所以是4
有不懂得还可以问我

4

4.
join是个短暂动词,所以用过去时比用完成时更恰当。