--What is that building?
--____________ the students have their dance classes.
| A．The building that | B．There are |
| C．That’s the building which | D．That’s where |
The water supply has been cut off temporarily because the workers ____ one of the main pipes.
| A．had repaired | B．have repaired | C．repaired | D．are repairing |
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 |