根据旬义，用括号内所给词的适当形式填空.

小题1:Although the film is very           (enjoy)，it is a bit long.

小题2:In foggy days，people should pay attention to their         (safe)while walking in the street．

小题3:The harder you study,the         (much)you will get．

小题4:Christmas is the most important holiday in         (west)countries.

小题5:Our teacher always tells us to listen          (care)in class．

龙门石窟中开凿最早、内容最丰富的洞窟是？著名的《龙门二十品》有十九品在该窟中。