SARS (Severe Acute Respiratory Syndrome) is a deadly disease (1)______ cause scientists haven't found. SARS is dangerous (2) _______ it develops quickly. Patients normally (3) _____ a high fever, a sore throat, and cough. Their body temperature is above 38°C. Antibiotics cannot cure SARS, and scientists are looking for a vaccine to prevent the disease. Before they can find one, it is important to have a (4) _______ lifestyle. You should keep fit, have plenty of fresh air, and eat lot foods with vitamin C.
1. A. which B. whose C. that D. who
2. A. although B. because C. so that D. therefore
3. A. make B. take C. have D. receive
4. A. healthy B. healthiness C. health D. healthily
Mn giup minh vs ạ