单选题 The boy acted_____he didn't know me.

单选题 Do you think the film is worth____?

单选题 The country is suffering from a_____of food.

单选题 There are good opportunities to learn skills____the job.

单选题 The____between rich and poor is getting bigger and bigger in some places.

单选题 There is no reason____he should refuse to join us.

单选题 Hourly output by workers ____1.3% in the first quarter.

单选题 On____,my mother earns 5000 yuan a month.