Lawrence Craven, a doctor from the USA, is the author of several published reports, one of _____ introduced the idea in 1953 _____ aspirin could reduce the risk of heart attacks.
| A．them; when | B．which; that | C．what; that | D．which; when |
___ it rain tomorrow, we would have to cancel the football match.
| A．Were | B．Would | C．Should | D．Will |
－Sunday is a public holiday, ___ children should get close to nature.
－But most of them have several lessons to attend.
| A．where | B．which | C．in which | D．when |
I have finished a large part of the novel written by Dickens, the rest of which ___ very difficult.
| A．is | B．are | C．was | D．were |
___ with the increasing unemployment, many people went on strike in most of the European countries.
| A．Facing | B．Being faced | C．Faced | D．Having faced |
－Mr. Harry, we want to hear what you think about the reform being carried out in our school.
－OK, I ___ to that.
| A．am coming | B．have come | C．came | D．come |