It’s time________ lessons. But Lily isn’t in the classroom.
A:to
B:for have
C:have
D:to have
37+58= 83-29= 90-46= 54+26= 27+63-45= 75-46+31= 64-(17+39)=
①一定的标准、法则或习惯。____
②指探望人或地方。____
③脸上的气色一点都没有改变。形容遇到危险时很从容镇定。____