The flowers were so lovely that they __________ in no time.
| A．sold | B．had been sold | C．were sold | D．would sell |
My family ____ small.
| A．is | B．were | C．are | D．makes |
Mathematics ____ the language of science.
| A．are | B．are going to be | C．is | D．is to be |
____ either of your parents come to see you recently?
| A．Have | B．Had | C．Has | D．Is |
Half of the fruit ____ bad.
| A．are | B．has | C．is | D．have |
When and where to build the new factory ____ yet.
| A．has not decided | B．is not decided |
| C．are not decided | D．have not decided |