—Listen!Itisstillnoisyintheheadteachers'
题型：选择题
问题：
—Listen! It is still noisy in the head teachers' office.
—Go and see _______ they have finished correcting the paper yet. [ ]
A. though
B. whether
C. unless
D. while
—Listen! It is still noisy in the head teachers' office.
—Go and see _______ they have finished correcting the paper yet. [ ]
A. though
B. whether
C. unless
D. while