二、单项选择(15%) 26.The teacher puts her hands behind her back and the students put ________on their desks . A. they B. them C. their D. theirs 27. Let Lily ________the work by herself . A. does B. doing C. do D. to do 28. They keep the door ________, so I can’t see what they are doing A. closing B. closed C. close D closes 29. Whose kite is ________, Jim’s, Kate’s or Katy’s? A.closing B. closed C. highest D. the highest 30. It ‘s very _________here , but it’s much _________in Beijing . A. cold , cold B. colder , colder C. cold ,colder D. colde