___ different life today is from ___ was 50 years ago!
--- Could you be so kind as to close the window? --- ______.
— We did not see him at the lecture yesterday. — You ______ him, since I went to an international conference with him.
The roof began to fall ______ she had time to dash into the room to save her baby.
Don’t be so discouraged. If you ______ such feelings, you will do better next time.
No such authorization ______ be given without the president’s written permission.