But if a treatment ________ delayed the disease by seven years were to be available, the number of sufferers would drop by 40% by the middle of the century.
Whenever I met him, _____ was fairly often, I like his sweet and hopeful smile.
All of us still remember the terrible earthquake that _______Tangshan twenty years ago.
The College Entrance Examination __________near, so you should be prepared for it.
— Is he said ____ his car lost? — Yes. He was so foolish ____ leave his car ____.
Whether we’ll hold the sports meet depends on the weather, _____?