_______the safety of gas, the government has checked the city"s gas supply syste

_______the safety of gas, the government has checked the city"s gas supply syste

题型:江西省期末题难度:来源:
_______the safety of gas, the government has checked the city"s gas supply system thoroughly.

[     ]

A. To ensure
B. Ensuring
C. Having ensured.
D. To have ensured
答案
A
举一反三
Einstein"s theory proved _____ and soon he became world famous.

[     ]

A. being corrected
B. correctly
C. as correct
D. to be correct
题型:江西省月考题难度:| 查看答案
Here are the first three books of his poem works, the fourth one _____ next month.

[     ]

A. will come out
B. comes out
C. is to come out
D. to come out
题型:天津月考题难度:| 查看答案
— The driver was not ____ for the traffic accident, was he"? 
— _____. It was the pedestrian"s fault. [     ]
A. blamed; Yes
B. to blame; No
C. blame; Yes
D. blaming ;No
题型:天津月考题难度:| 查看答案
In such dry weather, the flowers will have to be watered if they _____.

[     ]

A. have survived
B. are to survive
C. would survive
D. will survive
题型:同步题难度:| 查看答案
Many countries are competing ____ the Olympic Games.

[     ]

A. hosting
B. to host
C. holding
D. to hold
题型:同步题难度:| 查看答案
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