So far many students ______(volunteer) to do some work for the show.
问题描述:
So far many students ______(volunteer) to do some work for the show.
答
就应该用have volunteered。
答
have volunteered
so far是完成时的标志
答
have volunteered
用完成时
答
应该是have volunteerred
r应该双写的!!!
答
have volunteered