1 . ________ gardening may be hard physical work, those who love it find it very relaxing mentally.

A．Although

B．Once

C．Since

D．Unless

2 . Adults, ________overly concerned with fame and fortune, sometimes fail to see the joy in simple things ________ children do not.

A．unless … but	B．although … and
C．when … where	D．even if … unless

3 . 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

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

A．because

B．until

C．before

D．although

5 . ________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

6 . 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

7 . I will keep drawing and see what happens. ________ I never become famous, this is what I love to do every hour of every day.

A．Even if

B．Unless

C．So long as

D．Now that

8 . _________ we eat for breakfast has a great effect on our health, many students skip breakfast for various reasons.

A．Though

B．In spite of that

C．Despite what

D．Although what

9 . ______ she came back, she threw her arms around me, ______ sad and helpless.

A．The instant when; looked	B．The instant when; looking
C．The instant; looked	D．The instant; looking

10 . Children are admitted________ accompanied by an adult.

A．only if

B．even though

C．now that

D．as though