Tim Cook called his mother every week even while he_______ around the world.

We should speak ________when we meet someone for the first time.

233 The new president ______ last monthafter half a year election

In this university a medal with five thousand dollars _____ achieved success in science and technology every two years. [ ]

Recentlyasurvey_______pricesofthesamegoodsintwodifferentshoppingmallshascausedheateddebateamongcitizens. [ ]