Our new machines are much cheaper to run.
#17719
A
effective
B
efficient
C
energetic
D
enthusiastic
推荐题目
_____ shouldn’t have part-time jobs because they are too young.
#34974
A
Thirteen years old
B
Thirteen-year-old
C
Thirteen-year-olds
D
Thirteen year olds
The retired teacher is in his mid-seventies —seventy-six to be _______.
#18274
A
apparent
B
exact
C
approximate
D
similar
Would you be ______ to turn down the gas fire a little?
#20481
A
kind enough
B
kind so as
C
kind
D
so kind
The writer was so _______ in her work that she didn’t notice him enter the room.
#20032
A
abandoned
B
focused
C
absorbed
D
centered