—It is _______he often fails in exams_______ makes his parents worried about him.—So, he has to work whole-heartedly.
This is the case ________ he’s had all his money stolen.
Nearly all the streets are in straight lines, ________ from east to west. Those ________ run from north to south are called avenues.
In warm weather fruit and meat ________ long.
―Was the doctor there when you arrived? ―Yes, but he ______ out a moment later.
―________ for Beijing? ―Yes. And I’ll come back in three months.