It's nearly seven o'clock . Jack _____ be here at any moment .
A. must B. need C. should D. can
It's nearly seven o'clock . Jack _____ be here at any moment .
A. must B. need C. should D. can
C
根据语境空白处应填表示具有"随时可能"意义的情态动词。虽然can可以表示可能性，但它往往表示的是对这种可能性的怀疑。例如：Can he still be alive after all these years ? (这么多年之后，他还可能活在人世吗？) should除具有"应该"词义之外，还有一个含义是：will probably (将来很可能发生)又如：His uncle is working among the enemy officials now . Dangerous things should happen to him at any time . (他的叔叔现在在敌人的军营中工作，危险的事随时都可能发生在他身上。)