26.Younger adults who get either little sleep or a lot of it ________ see a greater expansion in their waistlines over time. A. may B. must D. need D. Shall
There are some book shelves in the back of our classroom, on which are various magazines and reference books, making reading materials more _____________to the students.
If the doctor is ____________this afternoon, I will take my little daughter to him for a thorough checkup, who recently felt dizzy and extremely tired.
Exposed to dishonest advertisements every day, we sometimes can hardly ______two similar products and thus we are in a dilemma where we don’t know which to buy.
She is a very unfriendly person and is never ready to help others. So it was not surprising that no one came to her ___________ no matter how hard she cried for help.