1 . It is an important work for us to ________ and analyze his various kinds of materials.

A．sort out

B．turn out

C．make out

D．try out

2 . Red lights ________ them a warning.

A．followed

B．filled

C．flowed

D．flashed

3 . They think it'll be easy but there is a surprise________.

A．in store

B．as well

C．over time

D．after all

4 . Highbrow critics claimed that the programme was “too sophisticated (深奥)” to ________ most viewers.

A．subscribe to

B．contribute to

C．appeal to

5 . When you take a flight with some registered luggage, do remember to _______ it after landing.

A．fold

B．seek

C．claim

D．harvest

6 . To tell the truth, you can't________to learn a foreign language in a week.

A．practice

B．expect

C．admit

D．imagine

7 . ________ my opinion, English is a very important subject and you should study hard.

A．Under

B．In

C．To

D．On

8 . Most of the major cities of the world suffer________ traffic jam.

A．for

B．/

C．to

D．from