---- Mary looks sad. What _________ her ?-----She failed in the maths exam.A. happened to B. happened C. was happened D were happened
One of the men held the view ____ the book said was right.
The young man went into the cinema and after ____ seemed half an hour he came out.
It was quite a serious mistake, ____caused by carelessness.
____ method you choose, so long as you finish the job on time.
I am so glad that I have found the same modern computer ____ I am working on.