---Let’s go to the lecture on International Trade this evening. ---That’ s great. I’ll _____ you at 6: 30.
China's population is expected to increase to about 1.5 billion in 2040, ______it will start to decline slowly.
Catching _____ sight of their head teacher coming, the students fell into silence all of _____ sudden.
—How do you find the film Captain America: The Winter Soldier? —___________. The film is well worth seeing.
While in London, we paid a visit to the hospital founded ______ the nurse Florence Nightingale.
Doctor Smith has made another wonderful discovery, _______ great importance.