—May I speak to the headmaster? —He a meeting now. Can I take a message?
A:is having
B:had
C:has
D:will have
《傅雷家书》是一本普通而又奇特的书。傅雷用自己的经历现身说法,教导儿子待人要谦虚,做事要严谨,礼仪要得体,做一个____、____的艺术家。
对于有理数,规定新运算:x※y=ax+by+xy,其中a 、b是常数,等式右边的是通常的加法和乘法运算. 已知:2※1=7 ,(-3)※3=3 ,则 13 ※b=____.
There weren't ___buses.