the road is covered with snow.i can't understand ()they insist on going by motorbike.这里面i can't understand是先行词吗?所以要填定语吗?还是因为是同位语,所以要填定语呢?
问题描述：
the road is covered with snow.i can't understand ()they insist on going by motorbike.
这里面i can't understand是先行词吗?所以要填定语吗?还是因为是同位语,所以要填定语呢?
答