He refused to tell us whether he ________ (undertake) the job.
would undertake
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He asked me whether my brother ________ (fly) to Beijing.
How long ________ they ________ (dig) the ditch?
Wooddoesnotconductelectricity;________.
Thisdiploma(畢業文憑)________thatyouhavecompletedhighschool.
This test ________ a number of multiple choice questions.
