10. is often the case, we have worked out the production plan.
| A．Which | B．When | C．What | D．As |
The manager raised his voice __________ he could be heard clearly.
| A．in order to | B．in order that | C．so as to | D．make sure |
We are in close contact with l
ocal authorities and it is a situation __________ we will keep a very close eye on.
A. where B. when C. which D what
In the past, officials have criticized American intelligence services, __________ they relied too heavily on technology.
| A．to say | B．saying | C．said | D．say |
We were reading _______ the lights were out.
| A．as | B．when | C．while | D．until |
Henry must have stayed up last night, ________ he looks so tired and sleepy.
| A．for | B．as | C．though | D．since |