some maths problems in this book are __difficult for the stu
some maths problems in this book are __difficult for the stu
some word puzzle in this book are __difficult that___ studen
Some physics problem in this book are______difficult for the
some physics problems ___ the book are not difficult.A in B
in some countries ,the problems for women are the opposite o
some english maths problems
i like to thing up some maths problems for them.
there are some students in the hall(划线提问 一般疑问句 否定回答)some stu
英语选择 some of the experiments ()in this book are ea
There are some interested srories in this book.改为单数
The maths problems-
.to solve the problems in the maths and chemistry