If nothing________,the oceans will turn into fish deserts.
27. ________ of the ________ life in the city, Mr Blaster, with his wife and daughter, moved to the countryside.
26. I think the student ought to be punished. He shouldn’t ________ cheating in the exam.
25. The boy ________ on the ground ________ to me that he ________ the book on the table.
24. — Someone is knocking at the door. It _________ be Tom.— No, it ________ be him; he has gone to Sydney.
23. “If anything ________ to the patient, let me know at once, please.” the doctor said to the nurse.