some physics problems ___ the book are not difficult.A in B
some physics problems ___ the book are not difficult.A in B
the text is not difficult.there are ___ new words in it .是a
Some physics problem in this book are______difficult for the
some maths problems in this book are __difficult for the stu
The kind of book is not ___.A.interesting enough B.enough in
There are some diffcult physics problems 改为单数句
Some parts of the book are difficult 翻译
What's in the bowl?There ___ some butter in it A.is B.are C.
There ___(be) something difficult in the book
there are some pandas in the zoo ,aren't ___. A they B there
I think physics ---- more difficult than math A.is B.are C.h
The Most Difficult Problems In The World