In ________, the house is like the letters．

A．form

B．shape

C．figure

D．pattern

The water is ________ and you can drink it．

A．boiled

B．boiling

C．boiler

D．boil

Oil has a low ________ point．

A．boiled

B．boiling

C．boiler

D．boil

After a fire broke out in the lab, a lot of equipment ________．

A．is damaged

B．had damaged

C．damaged

D．was damaged

I want to know Jack’s ________ the event．

A．reaction to

B．reactions to

C．reaction for

D．react to

Obviously, we can ________ a conclusion that good manners arise from politeness and respect for others．

A．get

B．arrive at

C．drew

D．take

The expression of a ________ of sorrow and anger in his face suggests it．

A．mix

B．mixed

C．mixing

D．mixture

Students can sometimes ________ study with pleasure．

A．join

B．mix

C．add

D．take

The crazy fans ________ patiently for two hours, and they would wait till the movie star arrived．

A．were waiting

B．had been waiting

C．had waited

D．would wait

I won’t tell the student the answer to the math problem until he ________ on it for more than an hour．

A．has been working

B．will have worked

C．will have been working

D．had worked