Why didn't you go to see the film last night? Because I ________ it before.A have seen B. had seen C. see D. saw
Using a telescope we could see that something .
all day, I went to bed early.
There is a natural phenomenon scientists call the greenhouse effect.
Every time I returned after an , I felt stupid because I was behind the others.
However, the eruption itself is really exciting and I shall never forget my first sight of one.