填空题
had to be operated manually
It may be necessary to stop（）(每隔一定时间) in the learning p...
填空题It may be necessary to stop（）(每隔一定时间) in the learning process and go back to the difficult points in the lessons.
There’s a man at the reception desk who seems very angr...
填空题There’s a man at the reception desk who seems very angry and I think he means（）(想找麻烦).
We’d like （）(预订一张餐桌) five for dinner this evening.
填空题We’d like （）(预订一张餐桌) five for dinner this evening.
