Mary is very clever and _____ worth teaching, but her brother is not.Look, he is now _____ asleep in class.
–Will you ______me ____out this problem myself? ---OK.
–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 _______.