He’s never lost a day’s work through illness. He’s as _____ as old boots.
#17960
A
strong
B
high
C
rough
D
tough
推荐题目
This advertisement is a/an______ example of their marketing strategy
#17849
A
average
B
specific
C
typical
D
flexible
He is_____his elder brother. 
#19762
A
as a tall fellow as
B
as tall a fellow as
C
so tall a fellow as
D
taller a fellow than