The students _______ busily when Miss Brown went to get a book she _______ in the office.
My parents have promised to come to see me before I ____for Africa.
The doctor persuaded the patient ____.Which statement is WRONG?
Don’t forget to examine the test paper you have just finished _____the possible mistakes in it .
The school _____you visited yesterday is the place ____I once learned .
-----Can I get you a cup of tea ? ------_______.