If your latest project blows up in your face, you mustn’t/ shouldn’t/ can/ should/ must quit your job as soon as possible.

Give advice: “When I listen to native speakers, I would understand if it was written down but I still can’t understand them speak”

If a member of your family joins the same company as you, you mustn’t/ shouldn’t/ can/ should/ must keep them at arms length at work.

Give advice: “I have problems understanding a/ an … accent”

Give advice: “I keep making the same mistakes”

If you’ve had to lay someone off due to overstaffing, you mustn’t/ shouldn’t/ can/ should/ must say “You’re fired”.

Give advice: “I pause too long before I speak”

If you get off on the wrong foot with your colleagues, you mustn’t/ shouldn’t/ can/ should/ must tell your boss about the problem and ask his or her advice.

If the share price has dipped, you mustn’t/ shouldn’t/ can/ should/ must sell your stock.

You mustn’t/ shouldn’t/ can/ should/ must use rules of thumb in most business situations.

If you’re glad to see the back of your boss, you mustn’t/ shouldn’t/ can/ should/ must tell everyone you feel that way once he or she has left.

Give advice: “I don’t have any opportunities to speak outside the classroom”