You____that letter to James. However ， you didn't.
B
「句意」你本应该给詹姆斯写信，然而，你没写。
「难点」oughttohavewritten是虚拟语气，与本句句意相符。
Theeldestchildisthoroughly（）becausetheyalwaysgivehimwhateverhewant.
Henoticedthehelicopterhoveringoverthefield.Thentohisastonishment,hesawaropeladder_____outandthreemenclimbingdownit.
You____thatlettertoJames.However，youdidn't.