一When did you learn the news that Obama made a trip to Canada as President?
一 ____ was on my return．
| A．That | B．It | C．There | D．This |
The temple is carved in rocks and has on the outside four large stone statues, ______ is 20 metres high.
| A．each of them | B．which | C．and each of that | D．each of which |
It was an exciting moment for the football fans, ______for the first time in years their team won the World Cup..
| A．which | B．that | C．when | D．where |
It was a serious mistake, ______ caused by carelessness.
| A．which I think was | B．which I think it was |
| C．I think which was | D．that I think it was |
____ is known to everybody, the moon travels round the earth once every month.
| A．it | B．As | C．That | D．What |
I remember that _____ took part in the ball party had a wonderful time.
| A．all | B．all that | C．all which | D．all what |