When he walks ____ my desk , he often knocks my books ____ the floor.
I don't know when______. When he ______,I'll call you.
-David has made great progress recently. -______, and ______.
–What do you plan to do this weekend ? -I don’t feel like _____such a long trip . I would like ____with my mom at home .
Neither Jim’s cousins nor he himself ____to America , but _____ of the know the country very well.
–We ‘ll be back for our school’s _____anniversary (周年) ceremony . -I see. That means you’ll have a get-together with your classmates in ____years .