Great changes ______in his hometown in the last twenty years.

Great changes ______in his hometown in the last twenty years.

#100973

were taken place

have taken place

have been taken place

took place

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—You’ve made great progress in your English study, haven’t you?—Yes, but much        .

#102651

remains to do

is remained to do

remains to be done

is remained to be done

 I ______ Wang Tao in the street yesterday. We _______ each other since he went to Beijing.

#103626

met, didn’t seen

have met, hadn’t seen

met, haven’t seen

met, hadn’t seen

--- When shall we restart our business?--- Not until we _____ our plan.

#100854

will finish

are finishing

are to finish

have finished

—Is this raincoat yours? —No, mine _____ there behind the door.

#102026

is hanging

has hung

hangs

is hanged

The theory he had stuck _______ to be true.

#104225

proved

to proving

to prove

to proved

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