1 . Wolves cannot climb a tree so when you ________ one, hide on the tree.

A．come across

B．come out

C．come about

D．come up

2 . When you open a dictionary, you often ________a lot of unfamiliar words.

A．come about

B．come up

C．come out

D．come across

3 . In case we read and ______ some unfamiliar words and expressions, we can guess their meanings according to the context.

A．come out

B．come across

C．come through

D．come about

4 . Some people lose heart when they ________ failures while others rise to the challenge.

A．come out

B．come across

C．come up

D．come off

5 . The girl ______ some old photographs in a drawer when searching for her papers.

A．got across

B．came out

C．came across

D．lived up to

6 . 云散开了，太阳出来了。(汉译英)

7 . She ________ some old photographs in a drawer when searching for his papers.

A．came across

B．came out

C．come about

D．come up

8 . If you_______ a word you have never seen before, you can look it up in the dictionary.

A．come up

B．come about

C．come across

D．come out

9 . I was still living in London when the war _______, so I witnessed the cruelty of war.

A．broke out

B．put out

C．came out

D．got out

10 . One day I ________ an old friend in the street who told me that his new book would ________ soon.

A．came across; come up	B．came about; come into being
C．came across; come out	D．came out; come about