---What color is it?—It’s _______ orange. It’s orange rulerA. an an B. an 不填 C. 不填,an
–How soon will he come back? --________.
–You speak English well.Who teaches you?--Nobody.I learn it by _________.
If you spend 100 yuan in our store this Sunday, you will get a present ________.
Sometime is knocking at the door. Who ______ it be? --It ______ be Tom. He is still in the school.
____ ill, I can’t go to school today. A Because of B As C Being D With