35．Would you like a cup of coffee first __________ shall we get down to business fight away?

　A．then B．when C．or D．otherwise

34．The boy wanted to fide his bicycle in the steer, but his mother told him________.

　A．not to B．not to do C．not do it D．do not

33．It was not until 1920 _________ regular radio broadcasts began.

　A．when B．which C．that D．since

32．_________ down the radio - the baby's asleep in the next room.

　A. Turn B. Turning C. Turned D. To turn

31．I hope there are enough glasses for each guest to have _______________.

　A．it B．those C．them D．one

30．It's nearly seven O'clock. Jack ____________ be here at any moment.

　A．must B．need C．should D．can

29．In some parts of the world, tea ____________ with milk and sugar.

　A．is serving B．is served

　C．serves D．served

28．- I'll be away on a business trip. Would you mind looking after my cat?

　- Not at all.

　A．I've no time B．I'd rather not

　C．You can leave D．I'd be happy to