.At this moment the bell rang _______ the end of class.
| A．announce | B．announcing | C．announced | D．to announce |
This watch is _____ to all the other watches on the market.
| A．superior | B．advantageous | C．super | D．beneficial |
Arrogance and pride are similar in meaning, but there is _____ difference between them.
| A．a submerged | B．an indecisive | C．an indistinct | D．a subtle |
We made plans for a visit but _____ difficulties with the car prevented it.
| A．consequent | B．subordinate |
| C．substantial | D．subsequent |
He didn't _____ what I read because his mind was on something else.
| A．hold on | B．catch on | C．take in | D．get over |
Scientists have to work hard to keep _____ with modern discoveries and developments.
| A．company | B．track | C．touch | D．pace |