选择恰当单词,并用正确的形式填空 slip, slide, glide Canadians living in that area often wear snowshoes in winter to avoid . He quickly down the tree when the bear went out of sight. It's a lot of fun down the sand hill. It has become quite a tourist attraction. The police assured the public that they would not let the chain killer through their fingers again this time. In the distance, a few fishing boats could be seen over the lake and also were the birds in the sky.