We had a science teacher who's style of teaching was very effective. He had to teach students
 us whose understanding of science was hazy. To us science was a subject whose main attraction
 10 A
 B
 PRACTICE F
 1
 When
 clause
 Underline the incorrect sentences and rewrite them correctly.
 EXAME
 1st p
 main
 sut
 T
 2
 the chance to mess around in the laboratory. Previous science teachers thought of us as a noisy bus
 whose hope of passing the subject was zero.
 Our new teacher's
 first lesson with us was on a topic that its principle we never could grasp. He
 made one of us try to move a table whose legs were fixed to the floor. After a while he scolded the
 panting boy whose efforts was all useless: “Lazy boy! Didn't do any work!” We all thought we had a
 teacher who was insane. Then we suddenly realised the principle of 'work done' whose point had
 escaped us before: if the object doesn't move, there's no 'work done!! We progressed fast under our
 teacher who his unusual methods aroused our interest.
 i We had a science teacher whose style of teaching was
 was very
 effective
 He had to teach students like us whose understanding of science was