It's too much trouble to fill in the blanks, because I haven't finished writing English, and I don't have enough time to write only the options.
Rational number DCCDDDC CCDBBADCBD
Addition and subtraction of algebraic expressions BDCBCDCBACD DCACDAAADDBA
The unary linear equation cadbbacdbacccacbba, the fourth one will not BDBA.
A preliminary understanding of graphics DDACD CAAB DBCC BCBC Problem 3 will not BDDACBDCCD.
Handmade hope to help LZ and hope LZ will adopt it.
Give LZ a suggestion and answer. The teacher has. I think all the classes have given the answers. You can ask the teacher for it.