Điền từ

82Air …………………. does a lot of harm to our life. ( pollute )

…………………. …the air must be limited to save our environment. ( pollute )
 

87 The train didn’t stop because of its ……………………( full )

88 They often chatter …………………………. ( gay )
 

91 This chewing gum can keep your …………. . ………(fragrant)

92 Heavy smoking makes him ………………. ……( breathe )
101 He always wants to ……………………. …any problems ( simple )