The best way to explore _______ countryside is on _______foot.
----Could you _____ take care of my cat while I’m away?----Sure. Leave it to me, please.
----How do you find his advice? ----What he said sounded _____, I think.
----Leaving for Beijing? ----_____.
----Be careful not to drop the Ming Dynasty vase. ----Yes, we can’t be _____.
----Thank god, you finally returned home _____.----You can never imagine how I worried about you when I was told about the terrible accident.