A 7-year-old boy received an operation on Tuesday successfully _______ he has many other health problems.
| A．since | B．however |
| C．though | D．therefore |
They lived a hard life and were often made _______ for over ten hours a day.
| A．work | B．to work | C．to working | D．worked |
_____ of the students who took part in the military training is 450.
| A．A number | B．A lot | C．Lots | D．The number |
The sales _____ steadily, the factory needs an increasing supply of raw material.
| A．have gone up | B．are going up | C．gone up | D．going up |
We prefer to measure our football team’s success _____ the number of fans attending rather than the number of games won.
| A．in addition to | B．in terms of | C．in honor of | D．in response to |
_____ in the regulations that you should not tell other people the password.
| A．What is required | B．What requires |
| C．It is required | D．It requires |