While through the old photos, I thought of many happy days.

While we _________, we saw a UFO land on astreet.

They sat down opposite each other, but it was some moments ______ they spoke

Rescuershad to __________ the search because of worsening weather condition.

currentglobal economic crisis, China, though _______to some degree, is undoubtedly acountry recovering the most rapidly from it according to some statistics