--Please ___________ the machine before you start it. Maybe it’s difficult for you to make it move.--OK. I’ll try my best.
---I often feel worried about exams. I don’t know ________________it. ---Maybe you can ask your teacher for help.
Wearing red makes__ easy_ _us to take action.
--- Which do you like better, tea or coffee? --- I prefer coffee ________milk.
You can never imagine what great difficulty I had _________ your house.
Mr Ma prefers ______ his dog after supper _______ him relaxed every day.