Rather than _________ on the computer, I prefer ________ with a pen, because I type so slowly.

Some blood types are quite common, others are regionally        , and still others are rare everywhere.

I _________ an old photo while __________ my album, which reminded me of my happy childhood.

The hotline_________ be very busy，but keep trying and you’ll get through．

At discussion, Jack ____ an idea that they should bring down the price of the bicycles.