The government has taken some measures to reconstruct the earthquake-hit areas, but it must be some time ________ everything returns to normal.
| A．since | B．after | C．unless | D．before |
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 |
More than one member ____ against the plan.
| A．is | B．are | C．has | D．have |