----- Nội dung dịch tự động từ ảnh ----- 7. You must not touch this button while the experiment is in progress. This button while the experiment is in progress. 8. We should call the police at once after the accident. The police at once after the accident by us. 9. We must put an end to this quarrel. This quarrel 10. You shouldn't make fun of the poor. an end to. The poor fun of.
