29. On March 12, the students were planting trees ____ the classroom. A．in the b

题型：不详难度：来源：

29. On March 12, the students were planting trees ____ the classroom.

A．in the back of

B．at the back of

C．to the back of

D．on the back of

答案

解析

略

举一反三

38. Donkeys and camels are still widely used in some parts of the world _____ of burden.

A．for animals

B．as animals

C．as beasts

D．instead of beats

题型：不详难度：| 查看答案

45. They are ready to fight the enemy _____ the last drop of their _____.

A．to; blood

B．to; bloods

C．for; breath

D．for; time

题型：不详难度：| 查看答案

56. He said under his breath that he would keep the secret. The underlined part means _____.

A．loudly

B．shyly

C．politely

D．in a low voice

题型：不详难度：| 查看答案

58. The little boy has learned many Tang dynasty poems _____ though he is very young.

A．by heart

B．by mind

C．by the way

D．by book

题型：不详难度：| 查看答案

59. Sorry, I took your pen _____.

A．by heart

B．by mistake

C．on purpose

D．by the way

题型：不详难度：| 查看答案