—What was it that caused the party to be put off?—________ the invitations.
The little girl couldn’t work the problem out. She wasn’t ____ clever.
The engineers made two big plans for the dam, ____ was never put in force.
——What do you think of the concert? ——I really enjoy it. I didn’t expect it was ____ wonderful.
To our excitement,two ______ of students ______ a success after three years' hard work.
Yesterday they had a quarrel and broke up with each other,but now they have ______.