1 . ______ the situation is challenging, we remain hopeful that a resolution can be found.

A．While

B．Since

C．When

D．After

2 . Absurd ________ it might sound, everyone present was amused by his adventure story in Africa. （用适当的词填空）

3 . ________ the only way to the mountain has been blocked by snow, we have to wait till it clears up.

A．As soon as

B．Even if

C．Now that

D．As long as

4 . —Alice used to be poor in English.
—She works very hard and has made ______ much progress ______ we are all surprised.

A．such; as

B．so; that

C．so; as

D．such; that

5 . The new tough regulation will apply even ________the platform provider is abroad.

A．where

B．in which

C．to which

D．what

6 . He will never make progress in math __________ he really wants to learn it.

A．if

B．as long as

C．unless

D．in case

7 . It was reported that many high buildings were put up         there used to be a desert, which made some foreign experts amazed.

A．when

B．where

C．how

D．what

8 . The first time ________ she led small groups of people on guided hunts, she taught them how to kill the insect, ________ has spread to much of Florida.

A．when; that

B．/;who

C．when; which

D．/; which

9 . The boom cannot be attributed to pure luck since Harbin has been preparing for it for a year, said He Jing, director of the Department of Culture and Tourism of Heilongjiang Province. (英译汉)

10 . We should try every way to develop education, ________ it means slowing down in other fields.

A．in case

B．so that

C．even if

D．as though