. It is still unclear ______ the little boy got the CD player to work.
| A．where | B．what | C．that | D．how |
I’ll tell him about it_____I see him.
| A．as soon as | B．so soon as | C．while | D．as |
_____ he came, he would bring us a lot of flowers.
| A．Every times | B．one time | C．Every time | D．Once a time |
I am sorry_____ I have caused so much trouble.
| A．that | B．for | C．as | D．since |
_____ it was finished in time.
| A．As the work was difficult | B．Difficult as the work was |
| C．Difficult as was the work | D．As was the work difficult |
He is taller than_____ in his class.
| A．others | B．all the students |
| C．any other one | D．the other |