1 . Many people welcome the chance to do meaningful things, ________they will get no pay.

A．even if

B．as if

C．in case

D．now that

2 . Feeling fearful is healthy ________ it helps you slow down and evaluate risks properly.

A．because

B．until

C．before

D．although

3 . There is a rule in the library that one is required to put the book ______ it is after finishing reading it.

A．what

B．how

C．where

D．when

4 . ________Earth is the only planet known to support life, humans’ adaptability will surely allow us to live on other planets.

A．While

B．Since

C．Until

D．Unless

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

A．as

B．just as

C．as if

D．as have

6 . Life is full of ups and downs. As we grow, we come to understand the fact that sometimes ________hard we try, things may not turn out as expected.

A．although

B．however

C．as

D．though

7 . We ________ 1000 English words since we ________ to this school.

A．learn, come	B．have learning, came
C．have been learning, come	D．have learned, came

8 . ________ he passed away in 1961, Mei Lanfang had been performing and encouraging the spread of Peking Opera for almost 60 years.

A．Once

B．As

C．Until

D．Since

9 . We ________home ________it began to rain heavily.

A．had left; hardly when	B．hardly left; than
C．have hardly left; than	D．had hardly left; when

10 . It was ________ I came across my best friend ________ I realized I had left the book at home that we had attempted to finish together today.

A．when; that

B．that; when

C．that; that

D．when;when