—Which of these two books will you take?—I’ll take ______, in case the journey is boring.
—What has made him upset recently? —________ alone to face the troublesome case.
It was very ________ of you to let us know you were going to be late in advance.
Young children need ________.
In my opinion,it was ________ to read English newspapers every day.
—Do you feel like driving out? —No. I'd rather we ________ a taxi.