It is known to all of us that lions ________ meat-eating animals.

Can you image that the CEO of Pu Tian Software Companydoesn’t __________ dress

t from door to door, _______ wastepapers and magazines.

Home is ________ somebody notices when you are no longer there.

We are a little worried because we _____the ground as a leader in the field of IT with the others speeding updevelopment．