People tend to live more happily and longer if they are ________ about life. 
#19244
A
pessimistic
B
enthusiastic
C
optimistic
D
terrific
推荐题目
It was____to watch small childen play games.
#19873
A
pleased
B
pleasure
C
glad
D
fun
Jane, an__ teacher with ____in teaching, had wonderful ____in foreign countries last summer.
#18616
A
experiencing, much experience, experiences
B
experienced, many experiences, experience
C
experienced, much experience, experiences
D
experiencing, many experiences, experiences