问题

Scientists still wonder whether cloning will help or harm us and where it ____ us

A:has led
B:is leading
C:had led
D:would lead

正确答案是：

同类题型

_______ she was invited to the ball made her veryhappy

When shall I return the book to you —–________.

OurEnglish teacher is often _______ to give a talk on English study. He ispopular.

下列词语中加横线字的注音全都正确的一项是（）

23．Can you make a sentence to _____ the meaning of the phrase?