Although you have lots of difficulties, you must _______your work.
If you bring snacks to the party, the teachers will ___________.
My friend has the same haircut _______I do.
I think you should _______ some money _______ your friends.
He doesn’t have any money, _______ do I.
Some scientists think that it may take _________years to make robots look like people, and do the same things as us. A. hundreds of B. two hundreds of C. two hundreds