词汇运用:
◆选择括号内恰当的单词或词组填入空白处，使句意完整、正确。
Look, there is a bird _____ (singing, is singing) in the tree.
— You forget to_________(get off, shut off )the electricity, Jack!
—Is your grandfather still alive?
—No, he has been dead              (for , since)I lived in the city.
— He has             ( just/ never) been to New York, has he?
—Yes, he has been there twice.
—        ( What / How ) is the population of Brazil?
—It’s 184million.