Scientists are trying to develop a special material, _______ they will make use of in space.

Which of these two magazines will you take?I’ll take________, in case the journey is boring.

— It is said that Tom is a wise manager in your company.— Oh, no, he is ____ but a wise leader.

---Is there ___________interesting on the Internet?---Yes. The First Lady Peng Liyuan attracts more attention than her husband on the visit to Russia and some other European countries.

— Bob isn’t feeling well. He has caught a cold. — Everybody seems to have ____ because of the changeable climate in spring here.