There is _____ boat in ________river.A. a; the B. the; a C. a; a
The computer needs_________. I think I need ________ to ask Mr. Zhang for help.
---- What else do you think we should pay attention _________ our environment? ---- Sorry, I’ve no idea.
It seems that the students devote much time and energy _____ a high score in the exam.
Sandy feels sure about her own ability. She is a (n) _______ person.
---- I’ll have an English exam about star sign next Monday. ---- _____.