--Why do you look worried?--I’m looking for my pet dog but I can’t find it______.A. somewhere B. anywhere C. everywhere
The population of China_______ than_______ in Japan.
Only_______ of the students_______ passed the English exam.
-We could invite John and Barbara to the Friday night party. -Yes, _______? I'll give them a call right now.
-How much difficulty did you have_______ this problem? -_______. It's quite easy.
Yesterday morning I was just leaving_______ the telephone rang.