根据句子意思，用所给单词的适当形式填空。
The ____________(high) of the new building is over 400 meters.
On Christmas Eve, the Santa Claus hides gifts _____________ (secret) into kids' stockings.
— How many times should I take the pills, doctor?
— ___________ (two) a day, please.
— Shall we meet at 9:00 at the school gate tomorrow morning?
— I hope we can make it ___________ (early). What about 8:30?
Mr. Li's report gave us a deep _____________ (impress) .
Remember __________ (turn) off the lights when you leave the room, please.
The film was __________ (base) on Chinese history in the 1940's.
Look! Can you see a kite _____________ (fly) in the sky?
The boy is a good swimmer. He can swim ____________ (cross) the wide river.
Many students find it ____________ (bore) to play computer games all day.