.----Who are those people gathering in front of the building?
-----A group __________ itself the youth volunteers.
| A．calling | B．calls | C．called | D．to be called |
The effect of the medicine on this kind of disease remains ________.
| A．seen | B．to be seen | C．seeing | D．to see |
The card reads：“Dear Mom and Dad，they are ________ everyone write home.Love，Joey.”
| A．advising | B．suggesting |
| C．letting | D．making |
With modern equipment，many mysteries have ________ to light in recent years.
| A．bought | B．come | C．thrown | D．appeared |
Her shoes ________ her dress，they look very well together.
| A．suit | B．fit | C．compare | D．match |
I ________ it as a basic principle of the company that suppliers of raw materials should be given a fair price for their products.
| A．make | B．look | C．take | D．think |