Vitamin D helps our bodies make a special chemical, and this special chemical, ________, affects our brains, making us feel happy.
| A．in turn | B．in particular | C．in advance | D．in short |
Students shouldn’t be given so difficult a problem_________they cannot work out.
| A．that | B．which | C．while | D．As |
Everyone likes_________of the two stories, for this story is _________than that one.
| A．both; not more interesting | B．neither; no more interesting |
| C．neither; not more interesting | D．either; no more interesting |
——Miss Lingam is arm in arm with Mr. Peabody!
——______sight
| A．how astonishing a | B．so an astonishing |
| C．what astonishing a | D．such an astonishing |
Mr. Oven has three children, one of whom is a child of six, ___ twins of twelve.
| A．another | B．other | C．the others | D．others |
_________the fact that his first experiments had failed, Prof. Smith persisted in his research.
| A．Although | B．Regardless | C．In spite of | D．In views of |