The memory pillow cost me a lot of money.— Did it? Well, that doesn’t matter ___ it helps you relax and have a good sleep.

This is a newly developed software from which yourcomputer can .

With his attention________on his mobile phone，he didn’t notice his headteacher’s appearance.

He is so busy with the research he has no time left for any other activity.

Every year, a great many visitors come to visit the temple ______ the 12th century, ______ has brought a large income.