______ their service, the workers of the hotel are active in learning English.
#91829
A
Improving
B
To improve
C
Improve
D
Having improved
推荐题目
(2011·浙江高考)Bats are surprisingly longlived creatures, some______ a life span of around 20 years.
#88942
A
having
B
had
C
have
D
to have
Premier Wen’s three-day visit to Japan, _____as the “ice-melt” trip, make a great difference to the relationship between China-Japan.
#98712
A
intended
B
intending
C
having intended
D
to intend
Don’t pretend _____.Look!You are holding your English book upside down.
#92579
A
to read
B
to have read
C
to be reading
D
reading