---Do you know mother giant pandas have only one or two babies ?----Sorry,I don’t know.
—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.