______ the pieces of cloth with a loose stitch before finally sewing them together.
| A．Join | B．To join | C．Joining | D．Joined |
29. A man who witnessed the accident said that the car _____ at nearly 100 kilometers per hour at the time.
| A．was going | B．is going | C．had gone | D．has been going |
28. He raised a suggestion at the meeting, ____ well worth considering.
| A．which I think is | B．which I think it is | C．I think is which | D．I think it is |
27. The experiment, _____ to test the theory, will be carried out tomorrow.
A. intendingB. intendedC. to intendD, having intended
26. Would you please speak ____ a loud voice? I didn’t catch what you said, with all the noise going on.
| A．in | B．on | C．of | D．To |
25. Only when I lost the opportunity to take my first job ____ how important it was to me.
A. I realized B. I had realized C, had 
I realized D . did I realize