According to our principal, all children should be encouraged to realize their full ________．

consequence

entertainment

presentation

potential

The black box is a necessary device on an airplane, which records its speed, direction and whether everything on the airplane ________ normally．

will function

functioned

is functioning

has functioned

Stella was disappointed to find her new plan ________ and fell into great depression．

put away

carried out

turned down

left out

If we can ________ our present difficulties, then everything should be all right．

come across

get over

come over

get off

Anyway, that evening, ________ I'll tell you more about later, I ended up staying at Rachel's place．

when

where

what

which

Chinese President Hu Jintao called for an immediate cease-fire in Libya ________ an even worse humanitarian crisis in the country at the BRICS Summit in Hainan province．

to prevent

to have prevented

preventing

having prevented

________ scores of times, but Derek still couldn't understand how to use past participle in a concrete situation．

Having explained

Having been explained

Though it was explained

It was explained

Thank you for sending us ________ fresh vegetables of many kinds．You have done us ________ great service．

/; a

the; a

/;/D

the;/

She's got the job because she has the advantage ________ others of knowing many languages．

over

above

against

beyond

As is reported, it is 100 years ________ Qinghua University was founded．

when

before

since

after