选出所给句子的答句,将其字母代号填在括号内。 ①Is this your jacket?________ A I'm ill. ②What's the time?________ B All right. ③Shall we copy it now?________ C No, it isn't. ④What's the matter?________ D Four thirty ⑤My pencil is too short.________ E You can have this long one.