Whatwere you doing when the UFO arrived— I with my dog on the street.

My father has done a lot of reading and writing ______ the year

Thevoyagesoftravelersbeforethe17thcenturyshowthattheywerenot____theseaeventhoughtheydidn’thavemodernnavigationalaide.[ ]

睡前你要对妈妈说_____________.

He was in hospital for six months. He felt as if he was ________ from the outside world.