Knowing how to give first aid really ______ in case of emergency. It can save lives.
31. ______matters most in learning English is enough practice.
30. Eating too much fat can______heart disease and cause high blood pressure.
29. The weather was___________cold that I didn’t like to leave my room.
28. We___________our examination at this time next Monday.
27. — Is there any possibility_____________you could pick me up at the airport? — No problem.