【单选题】Explain: having an extremely close friendship
【单选题】She admitted ______ a story to explain her absence.
【单选题】______ over and over again, but he still couldn’t understand.
【单选题】Can you explain ____ having done such a thing?
【单选题】通过低温的方法使花卉较长的时间内处于休眠状态,从而延长花期,通常处理的低温一般在().
【单选题】Explain: having a good effect