_____ of the students who took part in the military training is 450.
| A．A number | B．A lot | C．Lots | D．The number |
The wounded soldier died ______I had a chance to know his name and family .So I can never give regards to any of his family or relatives.
| A．after | B．while | C．until | D．before |
It was only when I reread his poems recently______ I began to appreciate their beauty.
| A．until | B．that | C．then | D．so |
Last term our maths teacher set so difficult an examination problem ______none of us worked out.
| A．that | B．as | C．so that | D．which |
His grandfather was among the first to settle in_______ is now a famous holiday center.
| A．which | B．what | C．where | D．that |
E-mail, as well as telephones, an important part in daily communication.
| A．is playing | B．have played | C．was playing | D．play |