19．Ships may have to wait for a couple of days，　　　 waves are not rough，permitting them to

　　 enter the harbor with safety．

　　 A．after　　　　　 B．while　　　　　　 C．when　　　　　　 D．since

20　　　 80 tons，the B一19 was clearly the largest and most advanced warplane in the world．

　　 A．Weighed　　　　 B．Being weighed　　 C．To weigh　　　　 D．Weighing

18．As a result of heavy snow，the highway has been closed up until further　　　　　 ．

　　 A．news　　　　　 B．knowledge　　　 C．notice　　　　　　 D．message

17．I’ll be late home because something has just　　　　 at work．

　　 A．come up　　　　 B．turned out　　　 C．taken place　　　　 D．brought about

16．Leonardo Da Vince　　　 birds kept in cages in order to have the pleasure of setting them

　　 free．

　　 A．is said to be buying　　　　　　 B．is said to have bought

　　 C．had said to buy　　　　　　　　 D．who said to have bought

15．California police discovered five people died in　　　　　 they say appeared to be a murder．

A．that　　　　　　　 B．what　　　　　 C．where　　　　 D．which

14．Though he　　　　 in the film for only 14 minutes，people flooded the cinema to see him．

　　 A．was　　　　　　　 B．appeared　　　 C．did　　　　　 D．behaved

13．John had to　　　　 all his belongings out of the apartment as he failed to pay the rent．

　　 A．fetch　　　　　　 B．pack　　　　　 C．bring　　　　 D．take

12．They told me it would be cheap but　　　　　 it cost me nearly $500．

　　 A．in a word　　　　 B．at last　　　　 C．in fact　　　　 　D．as a result