Some people fear that ________ air pollution may bring about changes in _______ weather around the world.()
/; the
the; /
an; the
the; a
The new comer is from Japan, ________ I can tell from his appearance.
It was ________ that the PLA men got to the earth-strike area.
He didn’t make ________ clear when and where the meeting would be held.
They look forward with hope ________ a chance to receive further education.
__in the regulations that you should not tell other people the password of your e-mail account.