—This math exercise is ________ difficult ________ I can’t work it out.
—Come on! Use your head and you will find a way.
such; that
so; which
so; that
The number of books in the bookshop is about 10,000 and a number ofthemabout science.
I think it’s difficult to go _____the forest alone.
Many students like reading the book Harry Potter_____by J.K. Rowling.
It is a good way to keep both teachers and students_______.
But none of the artists knew _____to make the King happy.