It is important to introduce children to healthy nutritious foods from ________ they begin to eat solids.
| A．what | B．when |
| C．that | D．which |
But for their common efforts, they achieved so much in their research.
| A．could have |
| B．will not have |
| C．could not have |
| D．have not |
I you a valuable present for your birthday, but I was short of money at that time.
| A．would like to give |
| B．liked to have given |
| C．would have liked to give |
| D．like to give |
The manager of the hotel requests that all the guests after the mid-night.
| A．don’t make loud noise |
| B．couldn’t make any noise |
| C．not to make low noise |
| D．shouldn’t make loud noise |
If I with her last summer, I with her now.
| A．worked; am getting on very well |
| B．had worked; would get on very well |
| C．had worked; would have got on very well |
| D．had worked; will get on very well |
--- Where have you been?
--- I got caught in traffic; I could have been here a little earlier.
| A．otherwise |
| B．however |
| C．though |
| D．anyway |