Could you help me check out these three sentences? Thank you. <br/><br/>1. The person is taking out <b>the printer ink cartridges/ ink bottle</b>. Which one is correct? <br/><br/><br/><br/>2. The coach is helping the woman do weight training. Does it sound correct? <br/><br/> <br/><br/>3. The chief engineer is going to <b>join </b>the business trip. Should I use join or participate in.