1. Global warming has caused many natural disasters.
Many natural disasters__________________________________________________
2. After she had explained everything clearly, we started our work.
Before we_____________________________________________________________
3. I can’t come because I have to help my dad with something.
If I_____________________________________________________________________
4. Although he took a taxi, he still arrived late for school.
In spite of______________________________________________________________
5. “I am going to join the Science Club.”, said Nam
Nam said_______________________________________________________________
have been caused by global warming.
Before we started our work, she had explained everything clearly.
did not have to help my dad with something, I could come.
having taken a taxi, he still arrived late for school.
he was going to join the Science Club.
1. has been caused by global warming.
2. started to work, she had explained everything clearly.
3. have to help my dad with sth, I can't come.
4. took a taxi, he still arrived late for school.
5. He was going to join the Science Club
1. many natural disasters have been caused by global warming
2. before we started our work, she had explained everything clearly
3. if i didn't have to help my dad with something, i would come
4. in spite of taking a taxi , he still arrived late for school
5. nam said that he was going to join the science club
