The other day, Mum and I went to St. James"s Hospital, and they did lots and lots of tests on me, ______are horrible and frightening. A.most of themB.most of whichC.most of thatD.most of what
The author of this passage probably intended to explain ,______. A.exactly how radar worksB.why the British used radio waves in their deviceC.how radar(word and device)came to beD.how radar helped the British win the Battle of Britain