I know you're busy these days, but you'd better ___________ off today's work till tomorrow.
A:not to put
B:not putting
C:not put
D:don't put
在制作家庭树时,我们可以把爸爸这边的亲戚归为一类,妈妈这边的亲戚也归作一类。这样会很清楚。( )
正方体是由____个完全相同的____围成的立体图形,正方体有____条棱,它们的长度都____,正方体有____个顶点。