—We need to _______ a time to have a talk.—What about tomorrow? I'm too busy now.
The Great Wall winds its way from west to east, _______ deserts, _______mountains and ________valleys, until at last it reaches the sea.
---I prefer spending much time solving the problem to consulting my teacher. ---That’s_______ I don’t agree. You should turn to your teacher for help if necessary.
______ relation between China and Russia has developed steadily since Vladimir Putin was re-elected______ president.
The precious paintings were hopelessly______ by long exposure in the cold, damp garage.
_______ is no possibility________ the engineer can complete the project within two weeks.