—Have you found anything wrong with your computer?—Yes,and I was about to give it up when an idea ______to me that it may be struck by some kind of virus.

Many questions _____ at the meeting, but he answered none.

We arranged to meet at the school gate at 8:00, but she didn’t _____

Some forms of algae have             to growing on ice.

I felt surprised that anyone of his intelligence    such an easy test.