--Is it _____ pen? --Yes. It' s ______ orange pen. A a; a B. an; an C. a; an D. an; a
If I you, I would rather at home and watch TV than to the party.
I don’t know when he _______ tomorrow, when hetomorrow ,I will tell you.
- —Linda, can you come to my party?—.I am free.
The price of this computer is the _____ of the three.
Some scientists believe that there will be more robots inyears.