I can't understand why he ________ so selfish. He isn't usually like that.
| A．was | B．had been | C．is | D．is being |
At our factory there are a few machines similar to _______ described in this magazine.
| A．them | B．these | C．those | D．ones |
It was not until near the end of the lettershe mentioned her own plan.
| A． | that | B． | where | C． | why | D． | when |
In some languages, 100 words make up half of all wordsin daily conversations.
| A． | using | B． | to use | C． | having used | D． | used |
No one _____ be more generous; he has a heart of gold.
| A．could | B．must | C．dare | D．need |
I had hoped to take a holiday this year but I wasn’t able to ______.
| A．get away | B．drop in | C．check out | D．hold on |