The work he devoted his time to _____ worth praising.
| A．was | B．be |
| C．being | D．been |
.
She offered me practical ________ with my research, for which I would appreciate for my whole life.
| A．conduct | B．certificate | C．admiration | D．assistance |
.
“ Look at him! He behaved ________ nothing had happened”, said Mary.
| A．as if | B．even if | C．if | D．unless |
.
They were singing and dancing to ________ their high spirits though it was very cold.
| A．keep up | B．build up | C．bring up | D．pick up |
.
The weather is so ________ this year that we can hardly stand so many cold days!
| A．wonderful | B．awful | C．absurd | D．accessible |
.
The place ________ the bridge is supposed to be built should be________the cross-river traffic is the heaviest.
| A．which; where | B．where; which |
| C．where; where | D．which; which |