单选题 Some of these methods will work,but___will not.

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

单选题 On ___,my mother earns 500 yuan a month.

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

单选题 Do you think the film is worth___?

单选题 The country is suffering from a___of food.

单选题 Hourly output by workers___1.3% in the first quarter.

单选题 The boy acted___he didn't know me.