Coal was formed out of dead forests by chemical ______ .
–When did the concert_____?---Oh, two days ago.
________arriving in Tibet , the soldiers at once joined them ____their work.At; with B. On; in C. For; with D. After; to
–Did Li Hua’s parents leave her any money?--- No. She has to support _______by selling newspapers.
– What’s the date today?---It’s _______.
Mrs Baker has her hair _____every Friday afternoon after work.