There was no significant difference between a girl and a boy _______ the structure and function of their brains.
| A．in place of | B．in need o |
| C．in search of | D．in terms of |
_______hard you try, it is difficult to lose weight without cutting down the amount you eat .
| A．However | B．Whatever | C．Whichever | D．Whenever |
A lot of language learning ,_______has been discovered, is happening in the first year of life, so parents should talk much to their children during that period .
| A．as | B．it | C．which | D．this |
That Jill was worried seemed _____ to everyone present at the meeting.
| A．constant | B．evident | C．previous | D．rough |
Having finished her project ,she was invited by the school______ to the new students.
| A．speaking | B．having spoken | C．to speak | D．to have spoken |
The calculations, had they been done by hand, ______all practical value by the time they were finished.
| A．had lost | B．would lose | C．should have lost | D．would have lost |