You that letter to James. However ，yo didn't（）.
A、oughttowriteB
「句意」你本應該給詹姆斯寫信，然而，你沒寫。
「難點」oughttohavewritten是虛擬語氣，與本句句意相符。
Our（）sensitivitydecreaseswithage.Byage60，mostpeoplehavelost40percentoftheirabilitytosmelland50percentoftheirtastebuds.
_____ at in this way, the present economic situation doesn't seem so gloomy.
Evenifhisletter____tomorrow，it____toolatetodoanything.
Priceshaverecentlyriseninorderto__________theincreasedcostofrawmaterials.
At______,photographyisachemicalprocess,duringwhichalight-sensitivematerialisalteredwhenexposedtolight.
