(单选题)17: Anna was reading a piece of science fiction, completely ___ to the outside world. A: having been lost B: to be lost C: losing D: lost ...

(单选题)24: He is worried a lot now, for he has lost a _____of keys today. A: mass B: pile C: piece D: bunch ...

(单选题)18: How close parents are to their children can produce some strong influence _____ their children. A: in B: at C: on D: for ...

(单选题)12: Doing all the housework ___ my mother at least three hours a day. A: spends B: affords C: occupies D: spares ...

(单选题)6: He flew from Europe to Tokyo by the_____across the Pole. A: course B: route C: may D: routine ...

(单选题)25: The accident was not serious at all-it did_____to either car. A: a few damages B: few damages C: a little damage D: little damage ...

(单选题)19: We are too busy to take a short break, not to_____a long holiday. A: talk B: speak C: refer D: mention ...

(单选题)13: The poor woman cried out in her _____. A: night mare B: night-mare C: ninghting-mare D: nightmare ...

(单选题)7: Neither John nor I _____ able to persuade Richard’s grandfather to attend the wedding. A: am B: are C: are to be D: is ...

(单选题)1: His joke was so funny that everyone there burst into loud_____. A: laugh B: laughing C: laughter D: laughters ...