Looking at my mother's ___________ face, I regretted not having told her my whereabouts on the phone.
-How do you often spend your summer holidays?-I often go hiking, for I like ______ nature.
His ______ that he was to blame kept the others from being punished.
She earns only 600 yuan a month and has little money for______.
The Capital Stadium is modeled ______ the shape of a bird’s nest, which is familiar ______ us Chinese.
Tour guides for groups of over ten must be booked ______.