multiple choice

[snade17]

Could you, please, tell which the correct answer is in the two sentences below. I think that the correct answer for sentence one is a) and the correct answer for the second sentence is c). Am I right?

1. He took (a) a three days’ rest (b) a three day rest (c) a three day’s rest

2. No one is coming, (a) is he ? (b) aren’t they? (c) are they? (d) isn’t he?

[Rover_KE]

1 - b

2 - yes, c