If metal is heated and then cooled very quickly,        , by dipping in cold water, it will be very hard but will break easily.

A．what’s more

B．in general

C．for example

D．on the other hand

A giant helium(氦) balloon is telling residents of Paris how good or bad the air quality is. When it’s good, the balloon ----measuring 22 meters wide and 32 meters high---shines green. _________, it’s red.

A．Though terrible

B．Whenever good

C．If worse

D．When bad

He slipped and broke his leg. ___________, he’ll have to be away from school for two or three months.

A．As a result	B．On the other hand
C．Above all	D．However

We will see you again next Saturday. ______, you must rest as much as possible and take good care of yourself．

A．However

B．Meanwhile

C．Otherwise

D．Therefore

We’d better stay at home, for John isn’t feeling well. ______, he doesn’t like to eat outside.

A．Therefore

B．Certainly

C．Moreover

D．Meanwhile

______, children under eight years old are still unable to take care of themselves.

A．To be frank

B．As a result

C．Generally speaking

D．To tell you the truth

Mother went shopping; __________, I cleaned the house.

A．while

B．when

C．however

D．meanwhile

I’m not sure what will happen during the trip. ____, I will try all possible means to get there .

A．Even though

B．If so

C．Anyhow

D．Instead

They lost their way in the forest, and     . Which of the following is wrong?

A．what made matters worse was that night began to fall

B．what was worse, it was getting dark

C．to make matters worse that night was falling

D．worse still, night had fallen

Why is he not allowed to stay here?       , it’s his home．

A．In all

B．After all

C．In other words

D．To be frank