His father looks young, but in fact he is ______.
#51836
A
in the forties
B
in his forties
C
in the forty
D
in his forty
推荐题目
It is said that the gravity on Mars is only about of the gravity on earth.
#51511
A
three-eighths
B
third-eighth
C
third-eighths
D
third-eight
—How many teachers are there in your school?—About two _________.
#51452
A
hundred of
B
hundreds of
C
hundreds
D
hundred
Look ! _________ students are doing morning exercises on the playground .
#51428
A
hundreds of
B
hundred of
C
hundred
D
hundreds