单选题 He cannot be operated upon as he is very weak.

单选题 It is impolite not to reply to emails, regardless of whom they are from.

单选题 The teacher, rather than the students, is responsible for this matter.

单选题 Sunlight is no less necessary than fresh air to people’s physical health.

单选题 Seen from the tower at night, the theme park looks more magnificent with all its lights on.

单选题 Learning to cope with a health problem can contribute to a better life.

单选题 Online banking offers much convenience, which can reduce the number of trips to the bank.

单选题 Traffic problems in Beijing is quite serious, and the same is true of other big cities in the world.

单选题 My teacher told me that choosing a right career is one of the most important decisions a young man should make.