I don't know how we can make ________ on the timetable for any more courses.
D
暂无解析
To study a foreign language, __________.
In the future, more ______ should be placed on the education of the young.
The problem ________ when the students refused to do their homework.
Wemust______thattheexperimentiscontrolledasrigidlyaspossible.
It was three British sportsmen who ________ banned drugs.