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 |
—Did you see who the driver was?
—No, so quickly, that I couldn’t gat a good look at his face.
|
A．did the car speed by |
B．the car sped by |
C．does the car speed by |
D．the car speeds by |
By improving reading skills, you can read faster and understand more of you read．
|
A．that |
B．what |
C．which |
D．whether |
there is a snowstorm or some other bad weal. her, the mail always comes on time.
|
A．Because |
B．If |
C．When |
D．Unless |
The thought of going back home was kept him happy while he was working abroad．
|
A．that |
B．all that |
C．all what |
D．which |
All the staff {n our company are considering to the city centre for the fashion show.
|
A．to go |
B．going |
C．to have gone |
D．having gone |
