________ their service, the workers of the hotel are active in learning English.
A.Improving
B.To improve
C.Having improved
D.Improved
试卷相关题目
- 1What impressed me in Greece was that the oceans _______ the islands were deep blue and many cities lay on the bay.
A.surrounding
B.being surrounded
C.surrounded
D.surround
开始考试点击查看答案 - 2A policeman saw two thieves ____ a girl's mobile phone on a bus and he caught them at once.
A.to steal
B.stealing
C.stole
D.stolen
开始考试点击查看答案 - 3The money collected should be made good use _______ the people in South Asia who suffered a lot in the killer earthquake and tsunami(海啸)
A.of helping
B.to help
C.to helping
D.of to help
开始考试点击查看答案 - 4Of the 9,500 drivers ____ since the beginning of the year, 23% were found ____ in road knowledge
A.tested; lacked
B.testing; lacked
C.tested; lacking
D.to test; lacking
开始考试点击查看答案 - 5When _________, the water changes into vapour.
A.heating
B.to heat
C.heated
D.is heated
开始考试点击查看答案 - 6Half of the honored guest ________ to the reception were foreign ambassadors.
A.invite
B.inviting
C.to invite
D.invited
开始考试点击查看答案 - 7When first _________-to the host, Tom was moved by his kindness.
A.introducing
B.introduced
C.introduce
D.being introduced
开始考试点击查看答案 - 8I left the door ________ last night, but fortunately, there was no sign of a thief ________.
A.locked; entering
B.unlocked; corning in
C.unlocked; climbing
D.being locked; going in
开始考试点击查看答案 - 9________ many difficulties during his childhood, he grew up into a strong - minded man.
A.Having experienced
B.Experienced
C.Experiencing
D.Having been experiencing
开始考试点击查看答案 - 10He preferred ________ something to ________ nothing.
A.to do; do
B.doing; doing
C.doing; do
D.do; doing
开始考试点击查看答案