问题

Do you know now— Because we need to develop our life.

A:why we have more new inventions
B:why we had more new inventions
C:why do we have more new inventions
D:why did we have more new inventions;

正确答案是：

同类题型

We expected there no problem with the publication of the book by now, but it is still being printed

Why did you buy so many flowers- my wife. I did something wrong yesterday. She is still angry with me,

Not all parts of the interior (腹地) of Australia are easily _____, because it is very hot and not many people live there.

What did you think of the concert given by the famous Hong Kong singer?— Not so good.In fact, it ______ to be a great disappointment. [ ]

She had a _______, so she went to see the dentist.