Modern forms of transportation and communication have done much to ______ the isolation（隔离）of life in Alaska．
| A．break down | B．break out | C．break into | D．break through |
Internet shopping is really ____ when people are sure of its safety.
| A．taking off | B．taking up | C．setting up | D．setting off |
Tired, Jim was fast asleep with his back ____ a big tree.
| A．in | B．below | C．beside | D．against |
To tell ____ truth, his coming is really ____ big surprise to most people present at the party.
| A．/ ; a | B．the; / | C．the; a | D．/ ; / |
In the last few years thousands of filmsall over the world.
A .have produced B. have been produced
C. are producing D. are being produced
＿＿＿all my letters, I had a drink and went out.
| A．Finished | B．Having finished | C．Finishing | D．To finish |