This is my treat and next is yours. How’sthat—OK. ____________.

Facebook is one of the most popular websites in Britain ___ over twenty-five million users.

some people regard as a drawback isseen as a plus by many others

Excuse me, where is Johnson?—He cannot go home, as his book is lying __________on his desk.

Every student as well as teachers who_______ to visitthe museum ______ asked to be at the school gate on time.