---What are you busy with ?
--- We are carrying out a research ____ the causes of cancer.
|
A．into |
B．onto |
C．to |
D．in |
– Jack?
-- ____.
|
A．Present, Sir. |
B．I am, Sir |
C．Here, Sir |
D．Yes, Sir. |
Work hard _____ you can succeed.
|
A．in order to |
B．so that |
C．for fear that |
D．in case |
All plants need air_____ they need water.
|
A．like |
B．as if |
C．as |
D．so |
_____ he wasn’t ready in time, we went without him.
|
A．Since |
B．As |
C．For |
D．Because of |
Sit _____ you like.
|
A．where |
B．at the place |
C．as |
D．wherever |
