Is the woman _______ singing in the hall you music teacher?Oh, it ________ be her. She is ill at home today.
We must study hard so that we can get a good job when we ________.
David worked _______ a waiter in a restaurant in his part-time.
_______ she is in trouble, her friends will help her out.
_______ there were only one minute left, _______ they went on getting goals.
There were about five _______ students in the teaching building during the earthquake, and _______ of them didn’t run out.