________ for the fact that she broke her leg, she might have passed the exam.
A. Hadn’t it been B. Had it not been C. Was it not D. Were it not
We need an effective strategy to help children living in poverty to have the opportunity to receive good education．
A．/;a B．a;/ C．/,the D．the; a
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
