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
Though ________ money, his parents managed to send him to university.
A．lacked B．lacking of C．lacking D．lacked in
The doctor recommend he _________ a few more days in hospital.
A．stays. B．to stay C．stay D．would stay
