你能帮帮他们吗
精彩回答
—How are you getting along with your presentation? —Almost ready, and I ______ all I am supposed to.
11个月前
Tomorrow is our teacher's birthday and we are going to give ________ a big surprise.
1年前
因为白炽灯工作时,是将电能转化为光能和内能,因此普通白炽灯正常工作时消耗的电能约有10%的转化为光能,其余90%因发热转化为了内能.
1年前
照样子,写词语。 又冷又黑、________、________、________
1年前
1年前