Bill is not _______brother. He is __________brother.
-Is your father a Party member ?- Yes, he the Party three years ago. He a Party member for three years .
—This physics problem is too difficult. Can you show me _______, George?—Sure.
_________our hometown is only a small one, the number of foreigners living and working here is growing fast.
--The film “Avatar”(阿凡达)_______ on the TV next month.--Really? I’m looking forward to it.
---Is this your e-book?---No, ________ is on the teacher’s desk.