4.Combine each pair of sentences to make one sentence, using the words given in brackets .
1. We won’t hold the perform. It costs too much money. (IF)
=> ………………………………………………………………………………
2. I was watching television. My friend came. (WHILE)
=>………… ……………………………………………………………………
3. The girl worked hard. Her stepmother wasn’t happy. (ALTHOUGH)
=> ………….…………………………………………………
4. Tuan gets many good marks. He studies hard. (BECAUSE)
=> ……………..…………………………………………………………………
5. People go to Huong Pagoda. They take a lot of photos. (WHEN