run是及物动词吗?keep on doing加run还是running?

run是及物动词吗?keep on doing加run还是running? A rabbit is run还是running on the grass? Run quickly还是Running quickly 是run-on sentence吗? run的现在分词running前面要加be吗? Can you practice every day?是running吗?还是to run?注明理由 my favorite sport is run还是running 想知道是run quickly还是quickly run 为什么run的现在分词是running? run-in怎么读?是“run宁”还是“run因” You look tired.NOW you should stop 后加 to run 还是running (to run/running/run) in winter because it helps them to keep