1 . The sun heats the earth, ________________. (which引导非限制性定语从句)
太阳使地球暖和起来，这对我们人类很重要。

2 . He is often ________ his classmates, ________ worries his parents a lot.

A．conflicting; which	B．conflicted; that
C．in conflict with; which	D．in conflict against; that

3 . Most players of the basketball team, _______ had tried their best to play the game, were sleeping soundly.

A．which

B．who

C．where

D．that

4 . A year is divided into four seasons, as we all know, _______ the first is spring.

A．which

B．of them

C．when

D．of which

5 . We have collected more than 500 children books, ________ are preserved in good condition, and they will surely be ________.

A．most of which; of great help	B．most of whom; of great help
C．most of them; helpful	D．most of which; of helpful

6 . Daniel的爱好是跳舞。他已经决定这学期要加入舞蹈俱乐部。
Daniel, _____________, has decided to join the dancing club this term.

7 . It is worthwhile to make an attempt at the digital imaging technology, ______(它有助于提高效率) (根据汉语提示完成句子)

8 . I’m one of the boys, ________ never late for school.

A．that is

B．who are

C．who am

D．who is

9 . 他们将进一步探索中国，它的独特文化给他们留下深刻印象。(定语从句)(汉译英)

10 . The teacher had a careful talk with Tom, ________ problems is poor study habit.

A．whose

B．his

C．one of whose

D．one of his