---Mr Ding,I have some trouble ______the passage!----Remember _____it three or four times at least !A,to understand ,reading B.understanding ,readingC.understanding ,to read D.to understand ,to read
— Excuse me. Is the museum open every day? —_______. It’s only open from Monday to Friday.
—_______ do you have a class meeting, Maria? —Once a week.
—Do you like fast food? —No, I don’t. I _______ go to McDonald.
Dick has _______ friends and he often plays with them.
--- Do you know _______ girl over there? --- Yes, she is my best friend.