in the rules that you should not tell others the password of your account.
A, What is required B, What requires C, It is required D, It requires
The Group of Eight is an organization the richest countries in the world.
A, is consisted of B, consisting of C,consists of D, consisted of
The computer system suddenly when I was surfing the internet.
A, broke down B, broke up C, broke out D, broke in
There is no to worry. He is old enough to take care himself.
A, difference B, need C, possibility D, sense
It is important and necessary for us to wash our hands before eating, because we can
disease our bodies with the meals.
A, absorb, into B, take in, to C, suffer from, in D, take, out of
As is well known, it is Hawking who the theory of black holes.
A, puts forward B, has put forward C, invented D, raised
