Choose the most suitable word or phrase underlined.
- I always stay at work _since/until_ six o’clock.
- Are you studying Chinese _for long/at the moment_.
- for long
- at the moment
- I’m feeling rather run down _lately/at present_, doctor.
- at present
- We _normally/forever_ get in touch with customers by post.
- We are _constantly/so far this year_ monitoring our products for quality.
- so far this year