_____ he realized it was too late to return home.
| A．No sooner it grew dark than | B．Hardly did it grow dark when |
| C．It was not until dark that | D．It was until dark that |
Nancy enjoyed herself so much ______ she visited her friends in Sydney last year.
| A．that | B．which | C．when | D．where |
—How about going for a picnic this weekend?
— Why not? _________.
| A．I’ve got that | B．It’s up to you. | C．Have a good time | D．That’s settled. |
I can’t remember the day ______ we first met in China.
| A．which | B．that | C．when | D．in which |
The boy ________ the father worked in the USA is Jack.
| A．whose | B．of whom | C．who | D．whom |
Is this the school _______ you worked last year?
| A．where | B．that | C．the one | D．which |