Listening to loud music at rock concerts ____ caused hearing loss in some teenagers.
Although he is only 14 years old, he __________drugs for two years.
The children were not allowed ________ the house because it was being painted .
We had to wait one and half hours _________ we had already booked a table. A. since B. although C. until before
When we arrived the cinema, the movie ____________ for 20 minutes. A. had started B had been on C. started D. is on
I don’ t believe he will come,__________? A. won’t he B. will he C. do I D don’t I