(1)You can't c________ (欺骗) your parents about your study．
(2)Everyone should learn to enjoy the b________ (美丽) of the nature.
(3) At the moment Lisa is c ________ （检查） her emails on the computer.
(4)After a 5-kilometer race, she suddenly felt w ________ （虚弱的） in the legs.
(5)I think watching TV is useful but my mom thinks it’s just a w ________ （浪费）of time.