Grammar exercises grammar exercise 1 make one sentence out of two. use which' 'where' and commas. e.g. the weather is wonderful here, which will make your holiday a success. 1 the weather is wonderful here. it will make your holiday a success. 2 i liked the secret. it is written by arthur c clarke. 3 arthur c clarke lives in sri lanka. he has a house in the capital, colombo. 4 bullying must be stopped. it is becoming a problem in many schools now. 5 the national curriculum of the uk includes