1 . We could have some tests to see what, ________, is wrong, and see whether we can do something to fix it.

A．when necessary	B．though enough
C．if anything	D．as possible

2 . Man may disappear________ other creatures who became too specialized to survive their environment.

A．as

B．just as

C．as if

D．as have

3 . ______ is mentioned above, those who lack working experience are likely to be turned down when ______ for a post.

A．It, applying

B．As, applying

C．It, applied

D．What, applying

4 . Unless otherwise ________, all the regulations apply to students in Senior Three.

A．to be stated

B．stated

C．stating

D．is stated

5 . Into the dark room ______ David, who became surprised then when ______ “Happy Birthday” shouted by his roommates.

A．walked; heard	B．walked; hearing
C．walking; hearing	D．did walk; heard

6 . The only thing he listened to while ________ up was Jazz music, for which he showed a particular ________.

A．grew; preference

B．was growing; interest

C．grown; interest

D．growing; preference

7 . These bad habits, if ______, will lead to serious problems.

A．leaving to be unchecking	B．left unchecked
C．left to be unchecked	D．to leave unchecking

8 . If we’re lucky, AI might think we’re valuable enough to keep around. ________, it might wipe us all out.

A．If so

B．If not

C．If possible

D．If necessary

9 . The simple wooden home has changed remarkably little as if in the 1950s.

A．being stuck

B．having stuck

C．to be stuck

D．stuck

10 . While ________ the daily routines in the staff office, we could hear at least three languages ________ at the tables around us.

A．discussing; being spoken	B．we were discussing; speaking
C．discussed; being spoken	D．discussing; speaking