--I would why he ____so strangely these days.
--Recent pressure at study may account for his behavior.
| A．was acting | B．is acting | C．acted | D．acts |
How long do you think _ the computer company brings out a new
product?
| A．it will be before | B．will it be until |
| C．will it be when | D．it will be that |
Prof. Richard was crazy about his research. His illness_________ his many years of hard work and irregular diet.
| A．led to | B．resulted in | C．accounted for | D．got around |
The manager, ________to know the fact, left the room quietly.
| A．who is surprised | B．having been made |
| C．being surprised | D．surprised |
As the wedding ceremony is drawing near, Miss Lin has showed _______ of such worry and fear as sleeplessness and poor appetite.
| A．symbols | B．signs | C．marks | D．signals |
Mary’s mom _______ her not to make friends with the man, but she never listened.
| A．advised | B．demanded | C．suggested | D．wanted |