_______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

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