—What were you doing when I rang you this morning?
—I was occupied ______ the housework and kept my son occupied______ his homework.
| A．at；doing | B．with；doing | C．at；to do | D．with；to do |
Look out! The ceiling _____ fall down.
| A．is to | B．is going to | C．is about | D．will |
. -- Who are those people?
-- A group ____ itself peace protection.
| A．calling | B．calls | C．called | D．is called |
It was nearly supper time _____ Bob began to feel terrible in his stomach..
| A．that | B．when | C．since | D．until |
Is this hospital _____ you once worked for nearly 10 years?
| A．the one | B．where | C．in which | D．the one where |
The car passed through the streets _____ we thought was a very dangerous speed.
| A．which | B．at which | C．at what | D．what |