The experiment shows that proper amounts of exercise, if_____ regularly, can improve our health.
A.being carried out B.carrying out
C.carried out D.to carry out
In the factory, there was a workshop_______windows were broken, so the workshop was so cold in the winter.
A.who B.which C.whose D.that
（2018·天津）Bob thought he couldn't go to the party because he had to write a report, but he went ___________.
A. at first B. after all
C. above all D. at random
China’s soft power grows ________ the increasing appreciation and understanding of China globally.
A.in line with B.in reply to
C.in return for D.in honour of
（2018·江苏）Developing the Yangtze River Economic Belt is a systematic project which _______ a clear road map and timetable.
A.calls for B.calls on
C.calls off D.calls up
It was when I got back to my apartment ________ I first came across my new neighbors.
A.who B.where
C.which D.that
