—Have you heard that Tom, along with his parents, ____to Japan?
—Really? No wonder I haven't seen him these days.
| A．has been | B．has gone | C．have been | D．have gone |
It is time that the government__________measures to protect the rare birds and animals.
| A．takes | B．took | C．has taken | D．taking |
He speaks English as fluently as if he__________an Englishman.
| A．were | B．had been | C．is | D．has been |
Without electronic computers，much of today’s__________advanced technology.
| A．will not have been achieved | B．have not been achieved |
| C．would not have been achieved | D．had not been achieved |
.But for the storm,we__________earlier.
| A．should have arrived | B．arrived |
| C．have arrived | D．shall arrive |
He described the town as if he__________ it himself.
| A．had seen | B．has seen | C．saw | D．sees |